Inviting some children but not others...HELP!

I agree with @OHP... I think that is totally acceptable to invite children you see on a regular basis and not those you don't. Honestly we have friends with kids who have already said that even though their kids will be invited they are leaving them home for a night out! I don't think you're being rude and hopefully the parents can use it as a night out!

I also agree. Invite the kids you want to invite.

I also agree with PP. Perfectly acceptable.

Okay thank you! I was worried it might be rude to invite the children of some cousins but not the children of others.

It is your wedding and you are allowed to do whatever you want to do. If someone doesnt like it, you can un-invite them. I am not having any children at mine besides my flowers girls and my ring bearer. Weddings arent places for a lot of kids and people to realize that

You are in the clear etiquette-wise, but sadly that doesn't mean people won't be upset or have hurt feelings. You can't please everyone at all times.

I was invited to a close friend's wedding and when I asked if the invite was for our whole family including our 1.5 yo daughter or just us. She told me "Unfortunately we aren't having kids, only immediate family like cousins. We're trying our best to keep it adults only for various reasons. Sorry for any inconvenience". We didn't have a problem with it at all but when we went to the wedding we saw that two other guests (non-family) had brought their small children (1 toddler and 1 newborn). I knew they weren't family but I didn't say anything out of respect for my friend. She ended up reaching out to me about a week post wedding and told me that she was happy we made it to the wedding and she wanted to apologize about the other children that ended up coming. Those guests what brought their kids didn't get the hint that it was an adult only wedding and assumed the invite implied the whole family. I would tell the guests with children that you don't want coming pretty much what my friend told me, just amended to your situation. It got the point across and was not rude at all. Also, make sure that it is clear who the invitations are addressed to; "Mr & Mrs Smith" or "The Smith Family" if children are invited.

One thing I am doing to avoid consuming is i am putting the # of guests in the invitations. In my opinion this is the best way to make it clear.

Perfect! I'm only really worried about two of my cousins (who's children I really do not want there) because they are the type that will make a scene about it! But I'm going to try and word it so that there is no offense taken and that the rsvps and invites are very clearly only for certain people, not the entire family.