We also got back yesterday and echo the recommendations. MP is fantastic - with ADR's and MP I was able to manage when we did what without running around (I have logged many miles as the family fastpass runner). We took several animation classes, saw Frozen, booked ADR's around noon so we'd have some time in a cool place (did CC and BB), did afternoon pool breaks and also used MP for Grizzly River Run - getting soaked on a ride is the perfect way to instantly cool off... although I did not know about the geyser which occasionally rises toward the end of the ride- it was a perfect storm and it basically flooded us all as we went through it. Was absolutely soaked for hours but never hot- yes, I was in cotton which really knows how to cling to that water!
One thing of note: during extreme heat the monorail shuts down. We were on our way out heading back to DLH for a swim before our flight- in front of the main street train station, when I stop and say "hey, we never took the monorail - let's go back and take it to DLH". So we turned around, walked all the way to the tomorrowland station only to find it was closed -so we had an extra 20 min of walking in 97 degree heat.
One thing of note: during extreme heat the monorail shuts down. We were on our way out heading back to DLH for a swim before our flight- in front of the main street train station, when I stop and say "hey, we never took the monorail - let's go back and take it to DLH". So we turned around, walked all the way to the tomorrowland station only to find it was closed -so we had an extra 20 min of walking in 97 degree heat.