DS1 3.5 yrs has the opportunity to go on a day trip to the zoo with school.
It will be his class (nursery) and the class above (reception), so about 22 children aged 3 - 5 years.
There will be 2 teachers and 2 assisstants going with them. The Zoo is an hours drive from school and they will leave at 9am and be back by 4pm.
We live abroad and it'll be hot.
I think he's just a bit too young for an all day outing in a big group like this, and we can take him to the Zoo another time.
DH is literally sulking that I won't let him go and has asked me to put it to the mumsnet jury.
AIBU to say no?