Dominica, Grenada, Curacao, or _____ for kids?

Hey there! I’m planning a post-Christmas trip for my family of four (kids are 13 and 5), and have narrowed it down to the Caribbean. Top of my list are Dominica, Grenada, Curacao, or potentially Anguilla, but I’m open to other ideas. Bonaire tickets are too pricey, unfortunately.

We love beaches and nature, and are not into the all-inclusive vibe. We’re definitely folks who like to have a good home base on the beach, but also like to explore and get a feel for the local life and culture. Two of us are divers, and two love fishing from the shore or boat. Easy hikes are great and suitable for small legs. We’d like to avoid big cruise crowds (think: Grand Cayman) and have a more chilled out experience. We loved coastal Belize and Eleuthera, but did not enjoy Turks & Caicos because it felt so tourist-centric and Americanized. I’m not too concerned about budget, but would ideally stay under $600/night or else split our time in one island between places at different price points. (We do love a good quiet luxury spot, but my credit card is still recovering from our summer trip to Hawaii!).

I’d love to hear from others who’ve been to these places, especially if you have kids. I’m leaning toward Dominica or Grenada (and then doing a later dive trip to Curacao myself), but am not locked in and would love input.

Thank you!