An I wrong?

I need your help here ladies. My husband and I rarely get out and about as we have three children 2 who are younger then 2! 
We struggle to find time for each other let alone time for ourselves. Granted, my husband is out of the house majority of the time working as I stay home with the kiddos. It's easier for him to get out and get the things he needs to get done because ya know, mommy is always there!
Well, last night my husband came to me and told me about a bachelor weekend for his friend that he is marrying. He said it was a day fishing trip and if he could go. Sure why not! Go have fun fishing! Today, he texts me and says so I forgot to mention that this is a weekend a trip. Spend the night on the boat Friday, Saturday, and he would be home Sunday night. I would be all for it except for the fact that just two weeks ago his sisters had a bacherlotte weekend in vegas and hubby said that I wasn't aloud to go because of all the kiddos. So I didn't.. 
So I told him it's only fair now that you don't get to go to this. I hate to be a bitch but I think what's fair is fair. I mean it's okay for him to go out and about and do whatever he needs to do but when it comes to me I have to be homes 24/7 for the kiddos because I'm mom. 
Am I wrong ladies? I try to balance things and let hubby do things but I try to tell him I need time to. My work is never done!