As I think about our upcoming trip, many dishes come to mind:

Stewed conch: Yvettes (with dumplings)
Conch salad: L' Escargot
Conch tempura: Villa Royale

Best tasting Mussels: Bistrot Caraibes (also has best smoked salmon and ginger rum digestif
Best Overall mussel experience: Sunset Cafe
@GCBC

Best goat stew (not curried): Le Ti Coin Creole
Best curried goat: Villa Royale

Best high-LDL grilled grouper: Caribbean Blend