If you love Maui Gold pineapples, then take the pineapple field tour offered by the Maui Pineapple Company (ask the Hyatt Concierge to book you). You can look up the MPC's web site, too, for tour info. Nothing fresher than picking a pineapple off the plant, slicing it open and devouring it right there! Plus you can take one (sometimes more) home. If you want to get it to the mainland US, be sure to rinse it thoroughly, and have it pre-inspected by the USDA at the Kapalua (West Maui) airport, first. Takes only a few mins. The pineapple will only be "fresh" for a couple days, so don't try this if it'll be a week before you get home. The RC staff can lend you plates and a knife to cut up your take-home, or they can do it for you.
Hyatt Maui is an older hotel, compared to Kauai -- showing some signs of aging, but they're renovating in some areas. The entire Kaanapali resort area was one of the first master-planned resort/destination communities decades ago. Many of the former hotels have gone condo now. So far, not the Hyatt.
Suggestion, if you don't mind small prop. planes...fly into the West Maui (Kapalua, airport code JHM) airport. We always try for that whenever possible. Taxi from the West Maui airport (which is in the middle of pineapple fields!) is about $20 inc. tip, and takes about 10-15 mins. to the Hyatt. If you are lucky to share the taxi with some other couple, you can sometimes split the cost, too. Last year, we made it from the Honolulu airport to poolside at the Hyatt Maui -- complete with swimsuits and drinks -- in exactly an hour and 25 mins. by going via West Maui airport. Room wasn't ready, but we checked in, stored our bags and changed to swimsuits in the RC restroom. If we'd gone via the main Kahului airport we'd probably still be in baggage claim or stuck in traffic on the other side of the island.