should i feel guilty or?

my boyfriend’s mom invited me to spend Thanksgiving with them and i can finally meet her, lol. My family doesn’t really do anything for thanksgiving, we didn’t last year and i don’t think anyone’s planning on doing anything really. it’s always just us 4. would it be bad for me to leave them? i would be 4hrs away. I don’t want my family to think i’m just ditching them and having fun w/o them.