Yes they will work at volcano bay. If you activated the cup refill at universal then that cup activation will work for the rest of the day at all 3 parks (Islands of Adventure, Universal Studios Florida & Volcano Bay) for that day. You can activate the cups in any of the 3 parks. If you go to the parks the next day you will have to reactivate the cups again for that day.
Yes,but sometimes they charge you after a certain amount of uses
Yes they do
Don't think so you could try
Not that I'm aware of
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