POR is probably a bit further out to the parks, but has the boat ride to DTD. I think the kids would be very happy at POR - Pool has slide/hot tub, which I don't believe AoA has. Grounds are nicer at POR, IMO, but you don't have all the Disney 'statues' around like at AoA. I also preferred the food court at POR than AoA - seems like everything is made to order at AoA so you spend a long time waiting for food. Plus, there is a sit-down restaurant at POR.
Travel time to parks wouldn't play into my decision for a resort - it's probably only a difference of minutes.