FI wanted to cut kids except WP out of the guest list completely. I got him to compromise because some of my OOT guests would not be able to attend without the kids, and it was really important to me that they be there. I didn't want to offend anyone by picking and choosing. The main reason we were considering cutting kids was because out of a guest list of 125-130, about 30 are kids. That's a lot of extra money and (hopefully not) a lot of extra chaos.
Anyways, I am guessing a lot of people will still want to leave the kids home, get a sitter, whatever. Of course this is not guaranteed and I'm expecting full attendance. I just know as a tired working adult/mother, I might use a wedding as a nice opportunity to have a night out with FI. I'm just curious out of all the kids you invited, how many parents brought them vs coming alone?