He's 13 and wants to go on a 9 day watersports trip, overseas, costing £700.
It sounds like a great trip and we can afford for him to go if that's what he really wants, although obviously we will miss the money.
There will however there will be other trips that come up and he needs to understand that if he goes on this one, there won't be any others at least this year or next.
So partly as a way of making sure this is what he really wants, and partly to cover some of the cost, I was going to say that he can go, but there won't be any birthday party this year and that if he needs any spending money he will need to save/earn it himself. Obviously he's getting a bit old for parties as such, but probably is expecting some sort of "do" maybe a few friends to the cinema and something to eat kind of thing.
AIBU?