What a depressing thought, one last visit to WDW! I would definitely stay at WL. I would stake out a claim on a rocking chair and stay there as long as possible.
Well, since money is no object, I'd make them an offer they couldn't refuse for that suite inside Cinderella's Castle that was built for the Disney family. Second choice would be an Owner's Suite on the Disney Magic followed by a suite at the GF.
I would choose the Polynesian. On the poll I said because of theme and that's partly true BUT I'd say the real reason is because we've always wanted to try it, but never have. We keep staying at the YC/BC because we absolutely love it there. Love the location and stormalong bay. so if it were my last trip (I hope this never happens) I would pick the Poly.
I would definitely be picking the Grand Floridian!!! That would accomplish many of those wishes... location, theme and food! I hope that this is not truly going to be someones last trip to WDW, though!