Ugh so much for freewill at my highschool? what should I do?

Ok I'm catholic and love God and everything but I may be forced to go on this mandatory retreat. I wnat go on the temple retreat but I need things to calm fown. It's just I may have and it's on Monday or Tuesday. But I don't wanna have to worry it about the day I get back. I have moy perosnal reasons, I'll feel so alone on hte trip . THere are some girls that I get along with but I don't hang out iwth and htere are girls who I can't to be in the samr room for the whole dya. Second, there's another girl who called me a witch and a devil worshipped just because I like some gothic stuff. What if she going on this trip and on the way to the church, she says, "Devil worshispper thus causing dirty look from other churchgoes and what during hte m, the church gives a fale sermon on how evil goths are . I Even though, I'm preppy I'll be deepy offended. I know htat hte chuch I go do wouldn't do this, The church we're going is to be like a 3 minute drive,