Covering from sisters boyfriends

I am a revert and my family is catholic/not practicing any religion. My dad goes to church and my mom goes with him, my sibling don’t really practice anything though. I reverted sort of recently and i’m having trouble dealing with covering in my own home when my sisters bf comes to stay. my brother is very respectful and he will always let me know before his friends come over/ask if i mind if they do. But my oldest sister lives with her bf across the country and when they come to visit i get stuck having to wear a hijab every time i leave my room. does anyone else have this problem?

my sister also wants to bring him on vacation with us. we usually go on beach vacations and i wear the burkini obviously but i like to tan so i got a blow up pool to put in the back yard so i can tan at home, but then if her bf comes ill have be covered 100% of vacation… whats the point in me even going at that point?

and because none of my siblings are hijabi (obviously bc they don’t practice any religion) i feel like im being unfair or something or too much. but its really upsetting to me to think that i wont even be able to be comfortable in the heat of the summer in my own family vacation rental home. the hijab is a huge struggle for me since im always the only one in the room wearing one, either at work, with friends, or family events. it just feels like such a big burden when i have to wear it for extended periods of time in my own dang home.

does anyone have an advice or recommendations on what to do?