We used Ali of Ali and Sons a week ago. He picked us up at Magens Bay to/from https://www.oldstonefarmhouse.net

The taxicab association pretty much gets $10/person on St Thomas, but maybe you can negotiate better.

If you mean Duffy's Love shack, they won’t allow more than 4 at a table. We had a good lunch at XO Bistro in the same shopping center instead.