Well.. the last time we were the in 2006 the mugs were $10.95 and you can refill them yourself at the pool (after 10 am). They have 6 or 7 types of drinks you can choose, from Coke to Tea. The mugs these days are bulky and will not fit in your car console.
On our recent trip they only had the blue and white 'Year of a Million Dreams' design - we were disappointed that they didn't have any VB designs to add to our collection!