Honeymoon Input

Hey everyone, so my fiancé and I are trying to finalize our honeymoon plans, which will most likely be in August of 2026, but the tough part is that my fiancé has a dietary issue where she can only eat organic/clean food. We are thinking of Greece, St. Lucia, Barbados, Curacao, or Grenada. Pretty much anywhere in the Caribbean. Would appreciate any input for places with the best food, laid back during the day, some excursions, and social/entertainment type nightlife. Price range: 6k-9k. TIA