Help! Vacation


Okay so my boyfriend and I had asked my mom and step dad to go with us on a cruise in Jan 2019. So this morning I call my mom and we’re talking about the cruise and everything then she tells me she’s going to take my two sisters and brother! I kinda wanted this to be just the 4 of us. How do I tell her that I don’t want my siblings coming? Like I love them to death but I won’t be able to put up with them on our second cruise together (my brother and sister). But it’s going to be my mom, step dad, and step sisters first cruise.