We did this week a few years back.
The parks got busier the closer you got to Thanksgiving. I think we arrived Friday night and left the next Friday. We did not go to the parks on Thanksgiving. Instead we hung out at the pool (SAB) and had an early dinner. Then we did DD and the BW. We were able to do Osbourne lights on Wed. night which was cool and we got to see a lot of resorts decorated for xmas. We tried to do the MK early in the week.