At BCV you can buy mugs at the Beach Club Marketplace which is also a good place for soups, salads and sandwiches. They also serve baked goods in the am and desserts and gelato. Everything we've tried is very good.
You can also get quick meals at Hurricane Hannah's...more traditional counter service offerings. HH now offers the same burgers as Beaches and Cream. The last I knew you could buy mugs at both those places as well.