DH and I went last year, and it’s a totally different experience. We couldn’t believe how quickly we could walk from Toon Town to the Haunted Mansion, then realized it was because we weren’t dragging 3 kids and/or trying to maneuver a stroller (or two) through that madhouse!
Although I missed them while we were there for 4 days, it was also really nice to do what we wanted to do, to ride the big rides together for once, to eat nice meals without worrying about someone spilling something or having to go to the bathroom right when I just got back from taking the first one.
If you have the opportunity and someone to watch the kids, I absolutely encourage you to take advantage of it. You won’t regret it.