I agree with suki & the others, Rachel. You've worked so hard for that 7 months of sobriety. Your instincts are right - get out of it. I know if I went, I'd tell myself I'd be careful but we all know how it would end up.
Glad you posted about this - very sorry you have this awkward situation to face, but you'll be so relieved when you've done the right thing. Let us know how it's going.