I have read good things on the DISboards about Nativeway Tours. We are thinking of doing this instead of Captain Marvin's. Any input? Anyone interested, here is the link and the description I received via email:
http://www.nativewaywatersports.com/
This tour takes you on a tour of the island by bus. It also takes you to Stingray Sandbar by boat. You can visit our web site to get a list of the locations that we visit by bus. You will spend about 20 minutes at Hell; 30 minutes at Turtle Farm; 20 minutes at Rum Cake Factory; 30 minutes at Stingray Sandbar. You will view 7-mile beach, Governors House, and old Homestead House from the bus.
-Joan