Just did a day trip with my DS's class - Year 2.
We went to the sea side.
Several kids with shoes they could not do themselves.
Several kids with lunches that slobbered every where.
Several kids with ruck sacks and bags that were way too big for them to handle and they had to handle them all day because we couldn't leave owt on the coach.
Bags of spare clothes which were so heavy, you'd think these children were going camping for two weeks - they only needed knickers, socks, shorts, spare T.shirt and cheapo, LIGHT shoes, in case they fell in to a wild rock pool which hadn't shown up on the risk assessment.
Parents - I know most Mumsnetters have more sense, but THINK before you pack 'em off. The kid's are there to learn and enjoy. NOT to get upset by the above.