We've been there several times and will be there again this year. It's one of our favorite times of year to go!
One year, it was warm enough to go to the beach (not in the water, but to sunbathe...). Last year, it barely got out of the 40s.
We enjoy the Turkey Bowl (touch football game) on the beach.
You can order dinner from the resort: either roast or deep-fried turkey with all the trimmings. Several local grocery stores offer ready-made dinners, but you have to pick them up the day before. Many restaurants have dinner buffets, or you can make your own, like I do.
The pools are heated, so swimming is possible -- it just might be a little nippy when you get out of the water.
Have you ever been to HH before? Do you need general HH info, or just specifically for Thanksgiving?