I went with my girlfriend this year and will probably do so again next year. I imagine it must be way more stressful going with children, with only two adults we had no issues sticking to plans, getting up early, getting bored, tired or sidetracked so we managed to cover ground a lot quicker and see a lot more. The other alternative is to opt for a slower, hassle free pace but we felt the greatest advantage was how we could get to see so much and be a bit more selective about the attractions we went on(although we tried to go on everything once).
Adults get a lot out of dining at the better places as well.