Apologies, I thought you were coming at it from the potentially too much time out of class angle.
It’s amazing what kids get out of them, especially socially when it comes to the bigger trips.
Example of a 2 day trip to London from Manchester for Year 6 (10/11 years) kids:
Most of them not been to London – maybe expected
Many never spent a night away from their parents – yes, maybe
Many never slept away from home/stayed in a hotel – ok
Some never left Manchester – slightly worrying
Some never eaten in a non maccies type restaurant – Nandos was the fancy choice
Some never been on a train – wtf
The actual London bit was far less informative of life outside of a tough estate than the actual mechanics of the trip!