Summer Camp is not particularly cheap (starting from 260E for 5 days) but is meant to promote both independence and team spirit.
For a young child (7) who's never been away from home:
If you have children who have been, did they enjoy it or did it become an ordeal being away from home?
What are the pitfalls/dangers or is it a safe, happy environment?
What was the outcome - any unexpected benefits or regrets?