it's all about leverage of expectations
Maybe I can share a few words of advice which I offer to all of my 'real' friends when they come to the islands:
Snorkeling - Don't waste precious cargo load in your luggage by bringing your own snorkel gear. Honolulu has a Costco (you can visit with a day pass from customer service) and a Walmart. They have what you need (and then some)
PLEASE - Do not feed the fish to attract them while snorkeling. It's just a bad habit and sea life is suddenly depending on food source 'tourist'. It's kinda like with the pigeons in a park
Hanauma Bay, Makaha Beach Park, Ko Olina Resort Area and Kulima Cove are good for starters. Sharks Cove (close to Waimea) is excellent. Yes, it's touristy but so is 90% of Oahu. Be careful at the westside of the island. Many areas are considered off-limits for tourists. Just some bad neighborhoods.
Have lunch (or dinner) at Rainbow Drive-In, Kanaina Avenue - a MUST! It's greasy and smelly, but it's a favorite hangout for locals.
Spent an afternoon in the Pauahi Bishop Museum! Seriously - covers the Polynesian islands all the way to Australia
As for kiting? Have your kite ready, but don't hold your breath ...