Hey CapeCodMom~
we went last Thanksgiving and didn't think it was really that crowded considering it was a major holiday. We flew down the day before from PVD, leaving in that big snowstorm!! SO, it was great to be in shorts later that day!! Temps were in the high 60's , low 70's during the day... we wore shorts ALL the time, being from Massachusetts, we wanted to take advantage of the great weather. There was only one night where I probably should have worn long pants, but I wasn't giving in.
Transportation was great, we stayed at the Polynesian, so we could walk to the TTC, took the monorail to MK & Epcot, or buses to DTD & MGM, none were jammed packed, maybe we just hit it at a good time. We didn't do any water parks, one day Blizzard Beach closed at 1:00 p.m because "it was too cold", man those people wouldn't survive up here if 60-70 is cold.
We went to California Grill for Thanksgiving Dinner... As jiminyfan said, I'd too advise you to go to Artist Point, I thnk that's a buffet, that way you'd at least get your money's worth. We paid way over $100 for 2 (my daughter & myself).. way overpriced $45 a dinner, I had water, my daughter had one soda and one glass of house champagne.
We went to MK Thanksgiving night after dinner, wasn't bad at all, saw the fireworks from Adventureland. We park hopped the whole time we were there, 1/2 day here, 1/2 day there. The only place I heard crying children was at MK... and that I blame the parents for not taking a break with the poor kids. sorry, my flame suit is on.
We left late Sunday afternoon, but went to MGM in the morning, went on TOT - 5 minute wait and RNRC -walked right in... then over to MK again... it was so strange to people getting ready for the parade and to actually see sidewalk space!
Good luck and have fun, it was just so strange to see no snow, Christmas decorations and Palm trees!!! all the resorts had their Christmas deco's up and ready...it was great!!!