I'll answer my own questions.
We're going to my in-law's for the holiday itself, but we are doing a Practice Thanksgiving the weekend before with friends. That way we'll get enough leftovers and my friend gets to try cooking a turkey before the actual day!
I'm making my mother-in-law's sweet potato casserole (I posted the recipe in Side Dishes), a pie, and some homemade cranberry sauce. I used to make the cranberry sauce (really more of a jelly) every year but fell out of the habit for the past few years. It's pretty easy, if you don't mind standing at the oven for hours mashing super-hot cranberries into a pulp.
I'm most looking forward to the turkey-stuffing-graving-sweet potato-cranberry sauce sandwiches in the days following Thanksgiving!