Nice leisurely tour. You get to see the highlights and make a few stops along the way. Caution: Don't pick up any souvenir pieces of lava rock along the way. It's against the law and considered bad luck. You don't want to incur the wrath of Madame Pele'.
Tour consists of two stops. One is at the Original Hawaiian Chocolate Factory and Cacao Farm. The other is at Kona Joe's Coffee Plantation. Both are great stops. You get a lot of good information on raising cacao and coffee trees and a few free samples along the way.