Fiancé's on shore for one day. Go out on date with fiancé. Get passive aggressive messages from both his parents about why we didn't come visit them while we were halfway to theirs.
Get outright insulting message from his brother about why we didn't visit, claiming I'm selfish and only care about them for what I can get out of them.
Fuck that. When my fiancé is offshore for 21 days, onshore for 1, and then back out for 3-4 weeks, I want to spend time with him alone.
Yeah, how dare you care about your significant other more than his rude family!
They're just angry. don't dignity their tantrums with the blessing of your emotions. 
I like his family a lot, but they really contribute to my anxiety. I don't like to visit them often as I can't drive and they live 2 hours away and if they pick me up, they pressure me into staying overnight.
But I have always told them that my door is open and I keep gluten free biscuits in the house ESPECIALLY for his mum and brother.