It will be hard to steer and you will have to watch that you do not over heat the car as if you do it will cause bigger problems! It depends on how far away the shop is but would suggest towing to be safe.
As far as the type of belt really doesn't matter but normally the belt comes off for a reason so make sure the pulleys it runs on and the components it drives are working correctly as one of them probably caused the belt to come off!
ASE Certified Technician
ASE Certified Technician, 17 years experience, Delaership Certified, Service Manager for 15 years