Is it appropriate to invite a person WHO IS NOT PAYING to a vacation home that everyone is paying for equally.

is it considered rude to not take anyone else who is paying into consideration by not checking to see if everyone thinks it's fair?

Currently in that pickle.

I want to say something to the person who invited somebody else WHO ISN'T FAMILY to a family vacation. I Dont want to be rude. But it does bother me. Am I being over dramatic lol