Base your pictures on other trips. How many have you taken on other vacations. Enjoy the moment, most people don’t really want to see your pictures when you come home anyway. Surfing $50 and up depending on time. Parasailing $75-100 depending on the season you are going. Snorkeling. go to Hamumana Bay, wrong spelling, but it is on Oahu is the cheapest. Rent a snorkel for about $10 or buy a cheap one. The small islands are a lot more expensive the Oahu for food. However, there are Burger Kings, etc on Oahu. Food is about any price you want to spend. Get AWAY from the tourist traps to get good deals, which is very difficult on a cruise because the own or get a kickback from the places they recommend or take you to. Chinatown has cheap food and t-shirts. Also Aloha Stadium has a flea market once a week, very, very cheap t-shirts. Same tourist stuff you buy in the hotel for $30 is $5. There’s a bus line that runs to it, if you have time. 7 islands in 7 days, to be honest is too much. Go inland on Maui and Kaui beautiful scenery. I mean you have North Shore for big waves, volcanoes, rain forest, etc. Study up where and how long the ship actually gives you. You’ll have fun.