I’ve done this a number of times. Plan, plan, plan and it will work out. I’d double check that the oven works and is normal sized…
Even with traveling light you should be able to bring dried herbs/spices in mini zip bags and a meat thermometer. I’d bring a good plastic spatula (the bowl scraping kind), can opener, corkscrew. I bring my multi- timer too. Perhaps an apron! I have some measuring cups that flatten for storage and bring them to rentals.
It’s great you are able to travel and bring Thanksgiving to your MIL. It will be a fun adventure!
