You should inquire about it when you check in but they will usually ask you to call the front desk the night before you check out because they won't really know til then how full they are. (if that resort has late check out)
We've used late check out several times at the S/D, but during busier times there were 1 or 2 times it wasn't available. Can't remember using it anywhere else.
We just stayed at the FW cabins and it wasn't available there.
We got a 1:00 check out at POR last year, I just called the front desk the night before we checked out and told them I was wondering if we could have a later check out, no problem. ~~