Am I being unreasonable/bridezillaish?

I've been so stressed out lately because of the RSVP's. More people than we thought are replying yes, we only have two no's. But the other day, we got responses for a party of 9 (2 were invited, but they decided to bring their 6 children PLUS one of the daughter's boyfriend); a party of 3 (aunt HAD to bring her two step-sisters that I don't know); a party of 2 (I invited two of my close friends who are engaged, she couldn't go so they decided to swap her seat for another friend that I decided not to invite because we're not close. They decided since I would've counted them as two it didn't matter who the second person was), etc.

I've been SO stressed about the money and my FH got annoyed at me yesterday saying it wasn't all about money.

But we don't have it and we don't know/want those people there, so I feel like I'm wasting money for no reason!! Am I being cheap/bridezillaish? I mean most of them ARE family....