I want my fiance to not have his daughter at our wedding. I think it should be adults only.
Are you sure your fiance would be ok with that?
Probably not but I don't feel like explaining it either.
It is ok if you don't feel like having kids at your wedding. It is expected people bring their kids to the party, people might be offended you won't have kids around.
No one said they have to stay. I can't deal with kids.
If you are marrying this man don't you think it would be better for you relationship if you don't try to exclude his child? It could lead to resentment and anger.