I'm studying on St. Croix next Spring... what do I need to know about living there?

I’m part of a national student exchange program that’s allowing me to go to the Uni. of the Virgin Islands @ St. Croix for my last semester of college. There are two things I absolutely need while there:

1. An internship related to the arts, preferably paid but I know that may not be entirely possible
2. The ability to not go into debt

I’m a college student so I don’t have a very large amount of money, although I have started saving already. Can anyone offer me advice on things like moving, island transportation (specifically: how plausible is it to commute from island-to-island on a daily basis with a small budget AND how does getting around St. Croix on a bike sound?), any vaccines I may need to get, cost-saving measures, safety tips, or anything else?