As the others said there is a place on the beach at the resort that rents most or all of the items you mentioned. I didn't pay attention to the prices, but a call to the resort should get you the information.
No I don't but you can bring your own chairs umbrella if your driving to use. If your flying I would call the resort directly and they can provide you with those prices. Its an independent company that is out by the beach. Give that a try.
Call Disney resort they be more then welcome to help you out with your question I really don't know what Disney resort offert to students. Call
Thanks! Your answer is awaiting moderation.