We have tried mid day breaks. For the most part, we get back to the room, and everyone is like OK . . . what now. No one gets any measurable amount of rest, we return to the park every bit as tired as we would have been had we just stayed there in the first place, and the mid - day break amounts to a mid - day waste of our time.
A nice long CS meal works well, as do long rides / shows with air conditioning, shops, sitting down to have a cold drink while waiting for the afternoon parade, bonus if you are in the shade. Extra bonus if you have a mister bottle, and / or a towel to wipe the sweat away. We manage to do rope drop to park closing pretty much every day, and do so in the end of August.