My ex husband is taking my DS to Eurodisney next week for a few days. They have regular contact and I get on ok with ex. My concern is that ex husband thinks our, just turned, 12 year old son is old enough to go round the park on his own. I am not happy with this mainly because it's his first time there, he could get lost, hurt himself, etc. I also think it would be pretty lonely. Ex says it is just so he can have a lie in and he would meet up with him later at park. I think they should both go later in the day although DS seems to quite like idea of going on own. Should I say no or AIBU? They will be staying at hotel outside park.