It's truly horrifying. There's quite a bit of walking at theme parks so even the ones able to walk are constantly stopping at every beetus stand to replenish sugahs. The worst I saw was a fatty at Islands of adventure with 2 huge turkey drumsticks, one in each hand, while its kids sat there watching it begging to go on more rides.  Something fun to do when you need a break is to park yourself next to one of the &qu  7ff8  ot;test seats" in front of some of the rides for fatties to sit in and see whether or not they can fit into the seat. Lots of angry fatties.