If you're worried about not meeting other Arts students, there are societies where you can meet them.
I have a friend who's on MuSoc Exec (Music Society), they do cool things, and spoke highly of them so I'll probably join that. There's other Arts-y societies like EduSoc (Education), ArtsSoc (Arts students in general - also they have a camp so that's super great for anyone who wants to meet new people), NUTS (Theatre - they also hold plays), and the Culture Club (they're just very arts student-y, wine tastings, etc.)
Plenty of opportunities to meet new people - which is what you should be doing first year at uni anyway.