 What's the formula for the best day of summer? H2OBX Waterpark. Lots of water. Tons of sun. Just add your family and friends. This is what summer is all about. The chemistry is pure magic. Save $5 on daily tickets when you buy online at H2OBXWaterpark.com. Be sure to use promo code Dixie. H2OBX Waterpark, located three miles from the bridge to the Outer Banks. The formula for fun.