Hi. We were there for a 10:20 reservation, too. Ours was on June 24, so I expected it to be crowded, but there was probably around 20 tables at most when we got there. Around 11:00 they started the changeover and put all of the breakfast items on the "right" side of the buffet and put the lunch items on the left.
Our server brought our check before the lunch crowd was seated, but there was nothing about leaving or clearing our table. We could have gotten some lunch food if we wanted it, since they started seating lunch folks while we were finishing up.
the lunch smelled good but we were too full to try anything. As a matter of fact, we will NEVER get a breakfast in the summer again. We felt terrible in the heat and barely did anything before we headed back to the room.