If you’re talking specifically on Thanksgiving day, all of the Universal hotels are offering feasts that day. You should check out the Universal Website on what each hotel is offering:
https://www.universalorlando.com/web/en/us/places-to-stay/hotels/holiday-happenings. Some may require a reservation.
My wife and I arrive the day after Thanksgiving (Friday), and are also staying at Aventura for the week. Although we’ll miss out on the Thanksgiving Day feasts, we are doing the Holiday Harbor Nights at Portofino Bay Hotel on Friday, the day after Thanksgiving.