I go to Michigan quite often to visit my girlfriend and her family.
I hope you have fun out there. I remember that your boyfriend is HOH so I'm sure you won't feel like a stranger.
My girlfriend is hearing and so is her whole family. She and her family is still learning ASL and trying hard to not leave me out, but sometimes, I still feel left out because they're not fluent yet.
I'm sympathy to you. You'll be fine.