Congratulations, Hawaii is awesome. You can go to the world class surfing beach Sandy Bay or Sandy beach, its one of these names then there is also a bay Cant remember the name but it starts with an H (any tourism official can let you know, its close to Diamond head and haas a giant Sea Turtle at it) and there its like 10 bucks to rent goggles snorkel and fins and you can use it as long as you want and there are tons of fish to see on the reef at this bay. Waikiki has great shopping and a beautiful golf course. At one of the stadiums is a world class Flea market with all kinds of good deals. You can also rent a moped from just about anywhere and travel the islands for a day. Go to Pearl City (right by Waikiki) and they have great museums and a great tour of the ships sunk in the attack on Pearl Harbour. There is a tour of a mountain called Diamond head that served as a lookout tower during world war two( ITs view of Hawaii is pretty hard to beat). An awesome place to spend the day is the Polynesian Cultural center. They have amazing acts and displays and activities. If you want somewhere really nice to go at night to be together try the Waikiki beach, its packed during the day but quiet and really nice at dusk and night. There is clubs and bars everywhere. Just get a bus or taxi to drop you off in Downtown Waikiki and you can go anywhere. Another thing if you are not renting a car choose a bus over taxi the bus costs a buck, they are nice buses and transfers are free. Any other questions just pm me.