Conner's actual birthday (Halloween) falls on a Wednesday this year. We are having his birthday the Sunday before and having a Mickey Mouse themed party. Then on actual Halloween, he'll be dressed up in some kind of costume and we'll take him out for a bit. We decided to always do his birthday party the weekend before Halloween, even if Halloween is on a weekend, so that he's not competing with the actual holiday. I never even thought about having a Halloween themed party. LOL I could imagine that'd get old QUICK.
Things might change as he gets older and can tell us what he wants to do, but this is our plan for now.
And this is also why there's no more January-May TTC for us. LOL No more holiday babies.