If you get there early, MK might be good, but I only have one time on Thanksgiving experience. We tried getting to MK before RP, ended up walking in right after. It wasn't too bad in the morning, we tried the mine train but it was already a little long so walked back to adventure land direction. We got Jungle Cruise, BTMR twice, Splash, PotC then the Country Bears, all with little wait before 11. We tried going to HM but it was really long, then as we got to the hub, it was really crowded so we left. But then looking at the app after 5 that day, waits were not too bad. So it was just mid day rush.