We like snorkeling at Honolua Bay, it is just North of Kaanapali. Keep going further and you arrive at the Nakalele Blowhole. Hike on down, just don't get too close.
We like the Skyline Eco Zipline company. One of their locations is at Kaanapali and you zipline up by the L for Lahaina on the side of the mountains.
The magic show in Lahaina is great. Don't pay up for all the food and drinks. Just pay as you go.
Maui Comedy Magic Dinner Show | Warren & Annabelle's in Lahaina, Maui
Molokini cruise for snorkeling, scuba or Snuba diving. You don't need to be certified to Snuba dive. We like
Maui Snorkeling Trips | Maui’s Best Molokini Snorkel Tour
Go deep sea fishing out of Lahaina.
Eat at Mama's Fish House.
The whales are in now....take a tour.
Don't make it a job to do everything you think you want to do. Remember you are on vacation.