DS is 18, he's in sixth form, due to go to uni next year to study accounting and finance. He has 3 main friends at school, he does socialise with more but 3 are his core friends, 2 girls, 1 guy.
One of DSs friends parents passed away when they were younger. From what I can tell they were left a sizeable inheritance and some was earmarked for travel. This friend and DS had been friends since about Y8.
DS hasn't worked through school. He had a job in the summer after his GCSEs and continued it a little into Y12 but his mental health was declining. I felt it was too much to be at school 8.30-3.15, then study groups, then homework, plus sports and socialising. I didn't feel like he should have to be spending the equivalent of a full time job at work or school so young. Since then we give him an allowance and he focuses on his studies. We are all happy with this.
This summer his 3 friends and him want to travel Europe. The friend with the sizeable inheritance has said she will cover hostels, so they can stay somewhere a little nicer and go to more expensive cities. DS would just need flights and inter-rail pass plus spending money then. He had money in his child trust fund account that he can use for this.
However I'm concerned, that the friend who is subsidising the trip is going to take control or feel entitled to call the shoots and DS may not have as good of a time. I'm also worried the friend may resent it and it cause issues in the group more widely. I know the friend is a nice person but I'm still concerned.
AIBU to want to recommend to DS he only does what he can personally afford, even if that means half the trip or similar? Or do you think it's fine for his friend to subsidise the trip?