Should I go on vacation with my friend and her family?

up to u

Feeling as you do about it, I can see why you'd wish her a great time and decline the invitation to join them.

You're allowed to say 'no.' Just say no. Say that you enjoy having her as a friend but you don't want to go on vacation with her. You don't have to give a reason.

Go for the experience if it’s not too far you don’t have to spend the full week.

I can't answer that but my daughter faces the same issue every year. She has friends, good friends that she hangs out with, sleepovers and such, Your age too. But they all dance, go to conventions, competitions, NY to see shows and such. After multiple days they all seem to start having little issue, over the top, one complains all the time, all little things that do grow when one is trapped with the other. I would say talk it over with your parents, whichever one is more understanding of these type of things. I do agree that it may be a great/good experience, that is the one reason my daughter continues to do these things.

Stay home, you'd ruin their holiday.