Volcano Island Waterpark opens at 11 AM.
For weekends it's 11am-7pm. You can make early reservations calling them. It's Valcano Island WaterPark.
Should be open by around 11:00 AM, think it closes around 5:00 PM. Might open earlier but it doesn't really matter, it fills up quick and stays full, getting there early has no real benefits.
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