To keep it short: my ex-wife cheated on me with this guy, we divorced, she married him immediately after. Since January we’ve been co-parenting, she has our son (14 years old) for 2 weeks & I have him for 2 weeks. Her now husband is wealthy, and for the winter holidays they plan on going to the Maldives for 3 weeks (I agreed to give up 1 week of my 2 weeks; gonna get +1 week with son after the vacation). Apparently son has been asking his mom and stepdad if I can come as well. So ex-wife calls me and asks me if I’d like to go, all expenses paid by them, just to be with our son and have some fun - and let’s “put all the bad blood behind”. I told her I’ll think about it, but honestly I don’t think I’d feel comfortable. At the same time going would make son extremely happy obviously. Idk.
Personally I would do this but it depends how well you get along with them. Obviously the last thing you want is arguments and sulking. Having your own space to retreat to would be the thing to negotiate ahead of time.