I took the 9 and 7 year old to the local non-leaguers last season, followed a little bit after by Stoke v Plymouth. Was pretty much a perfect day for it and once the pre-match burger and chips were done they seemed to enjoy the first half, but the younger was definitely done by half time.
Makes me wary of trying to get Anfield tickets any time soon. Probably all in for the best part of Ł150-200 with that, even if you get through the ballots to be chosen. Whereas the next Stoke game still has tickets available pretty much pitch side at the halfway line, all 3 of us in for Ł23. Might try them at Stoke again to see how they do.