Ka'anapali is also convenient to the historic whaling town of Lahaina, once capital of the Hawaiian Islands.
Trolley service to and from Lahaina makes several stops at various places throughout the resort area. Lahaina is well known for its vast array of restaurants and shops as well as its cultural and historic center.
I highly recommend that you take a walking tour of historic Lahaina. A free historical walking guide is available at the Lahaina Visitor Center in the old Lahaina Courthouse located between the Banyan Tree and warf.