You are so lucky to have someone set it up for you.
My lawn has never looked so good but my brain is completely addled working out how.
You were previously obviously doing a bad job Mik 
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Sussed again!
I am a fine one to speak, not being a gardener, we employ one for France 
You’re making me nervous! I’ve been trying for the last 3 days to buy the same mower that you have and failing miserably. Finally established it’s because the total price (I want the solar panel as well) is above my C/A card ceiling. Just been into the bank and they have no internet, so cannot give me a higher limit. I’m beginning to wonder if the universe is trying to tell me something. 
Knowing what you know now Mik, would you have bought the Mammotion?
Yes definitely. I think I would have gone for the larger model i.e. not the mini version because it has two blades so can cut an area faster. My lawn size is over the limit they recommend and just below the maximum size permitted. My rear lawn takes 24 hours to cut (depending on settings), so I get through a lot more beers than expected. 
Remember I am no expert but I am happy to answer question when/if you get around to setting up. The big unknown is how reliable they are over time and how easy repairs/servicing is. Servicing should be much easier than my sit on mower which is a nightmare to get seen to.
I still can’t answer your question about your tree overhang. I can tell you that if it loses a satellite fix, the manual says it can keep going on dead reckoning for around 300 metres. Then it stops and waits till it gets a good fix after which it carries on again. The pain is if the battery drops too low while it is waiting for that fix (but this only happened to me once). You always have the option to manually drive it (you can carry it but it weighs 15 Kilo) to another part of the lawn to get a good fix from where it will continue where it left off.
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Thanks Mik. I’ve realised that even if it can’t do under the trees - and I’m hopeful the dead reckoning will work - there is still a large area of adjacent lawns that are in full sun and it will make such a difference not to have to do these. The solar panel will come in useful as it will free us up to put the antenna elsewhere in the garden and not by a power point. Here’s hoping the bank has managed to get their internet back and raise my limit so I can get on and buy it.
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I just made a VERY SHORT video for you @SuePJ of Luba mimi negotiating an awkward route to my front lawn up a slope that is too steep for the fosse septique wagon. It is of course speeded up. It follows a slightly erratic path that reflects my poor grasp of RC skills when programming it. The whole sequence was started by an “Alexa, mow the grass” command but is a bit of a cheat because i had already programmed all the variables like height of cut, direction of mowing etc.
Bless you. 
I have just ordered ours (gone for the 1500 plus solar panel). In the end OH has paid and I’ve transferred half into his bank a/c. Our branch in town still has no internet so they cannot raise the “plafond” on my card, even though I have 4,000 € in my account, so I can’t pay. Just sometimes French systems irritate! 
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Oh if I’d known you were going to buy the solar panel too I would have sold you mine for half the price.
I bought a Luba 2 X 3000 and solar panel a couple of months ago, but the 4G iNavi works so well I didn’t bother setting up the RTK and solar panel which is still sitting in the corridor unopened.
So, if anyone is thinking of buying one … 
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@SuePJ I notice in another thread that you are about to start programming your robot mower. Can I chip in with a few hints that I would have found useful when starting out?
Before using the robot, mow the lawn with a conventional mower first. The robot should be called a trimmer rather than a mower and cannot do much with long grass clippings other than push them into unsightly lines either side of its route.
The RTK powered by solar is a good solution. It is important to get as good a view of the sky as possible. The higher the better to get better horizon view. A direct line of sight to the robot is not necessary. Being a radio signal, obstructions simply attenuate the signal rather than block it. It has reasonable range. My longest distance is 70M from the RTK to robot. Make sure it is rigid and not liable to wave about in the wind. Once fixed do not move it to a different location otherwise you will need to remap your areas.
The charge point can be anywhere tucked out of the way. Try to make sure there is a hard surface of about 1 metre square in front of it. The robot does a fair bit of rotation when manoeuvring into position and can scuff up soft surfaces.
Only map a small area to practise on until you are familiar with the way the software works. Automatic mapping does work but manual mapping is very easy. The joystick controls that you use on the screen of your phone take some getting used to but work well once you have the hang of it. Don’t hurry.
The robot does stop for no apparent reason even on an open area. A loss of position is notified. Don’t worry about it. Don’t go pressing buttons and prodding things as I did. It just waits until the satellites have moved around a bit then it gets a good fix and continues working. The only problem you may have is if the battery runs flat while you are waiting, in which case you will have to manually return it to the charging point.
The blades are razor sharp, wear gloves. Each blade has two fixing holes. You can fix in either hole and have the blade turned over as well. This gives you four times the use from a blade. Make sure they can rotate freely. They are easily clogged by wet grass. Buy some Loctite thread gripper to prevent the screws that hold the blades from working loose when mowing.
If your robot needs to update itself it should work automatically. In my case I kept getting a message “update failed”. This was because it can only do so over a 2.4 KHz Wi-Fi connection. If this happens Mr ChatGPT is your friend.
If you have any specific problems, pm me and I will see if I can help.
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Thanks very much for this Mik, very helpful.
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I think I shall carry on having the second under-gardener mow the lawn.
(Me) 
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Our gardener doesnt remove the cuttings either, just opens the side shoot and I have spent the last two afternoons with the powered scaryfying thing trying to rake all the dead dry grass up 
Ok, so I have picked through your commentary and kmowing you are an ardent battery fan I can see that despite all the negatives you are determined to be happy with your grass ‘trimmer’ regardless of both its complexities and inadequacies.How is it with mole hills?
I have given up setting mole traps and now simply drive over the hills slowly. The mower deck flattens them and the blades spread them powered by their 20hp twin cylinder Kawasaki engine, i doubt a battery trimmer will do that.
I think you are being too negative John - each to their own. All I can say is the lawns round here that are robot mowed look wonderful and I have been wanting one of these for years. OH has more than enough land to be mowing using the John Deere and the lawns around the cottage tend to be done by me using a battery Stihl. I have more than enough to do inside the cottage and around the pool, so to have a robot doing the work outside while I’m getting on with something else would be a joy.
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Yep,that’s me.
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I thought you looked familiar when I Googled it.
Each to their own indeed.
Adding a third machine to your grass cutting equipment seems to me an expensive vanity project.
Personally I find grass cutting therapeutic and while driving around the garden it keeps me up to speed with what plants/bushes/shrubs/trees need attention.