Yes, they do have refillable mugs. You can buy them at the Boardwalk Bakery and probably somewhere else too. You can refill them with soda/ coffee at the Boardwalk Bakery and maybe in the lounge too. I believe the cost was about $1.09 or so to refill. I don't remember how much it was to buy, maybe about $6 or $7. It wasn't bad. I found the refillable mug came in handy. I'll probably buy another one at the Beach Club Villas this summer.