We stayed in the cabins in August 2008. We didn't arrive in Orlando until after 4 PM, got on Magical Express, checked in, were delivered to cabin - and were starving at that point. So we get on a bus and go over to Trails End, where we wait over an hour (with DD, DSIL, and DGD3) then to be told there was no room that night for walk ins. By then it was around 8 pm, our only option was to go to the take out section, buy food, and catch the bus back to our cabin. We never had the chance to eat there during our visit because they were always full, and we hadn't made any reservations.
If you have your heart set on eating there, I wouldn't go all the way over there without the ressies......just my thoughts.