My wife and I have never gone by ourselves to any character meal because we're lucky to have Emily to provide cover.
HOWEVER,
I think it must be said that you are allowed to go to a character meal childless IF and ONLY IF you are NOT particularly MATURE.
If you're too mature, you cannot go.
Fortunately, this would NEVER stop me.
I hope it does not stop you.
Go, and enjoy.
Kevin