I'd spend the money to upgrade but not to AKL. Personally, it doesn't appeal to me, but with two little ones I would take into account the distance it is from everything else.
POR is one of my favorites, but if I was looking to spend to upgrade, I would look at WL as it is much closer to MK and there is more to do around it, or look at Dolphin or Swan, they usually give a great AAA rate and they are right in the thick of things with Epcot and DS nearby and the proximity of BW/YC/BC.
POR is one of my favorites, but if I was looking to spend to upgrade, I would look at WL as it is much closer to MK and there is more to do around it, or look at Dolphin or Swan, they usually give a great AAA rate and they are right in the thick of things with Epcot and DS nearby and the proximity of BW/YC/BC.