Cool. But don't come all at once.

Bonaire’s laid-back beauty might blow you away. The food will, too. - The Boston Globe

Mrs Seth and I still have a couple of years left on our Netherlands resident cards. Are they valid in Bonaire? I might need to rest a year or so after such a long flight!

I don't know for sure, but I very much doubt it. Everyone here, including Dutch, have Bonaire resident cards.

A residence permit for Bonaire isn't valid for the European part of the Netherlands so I guess that makes sense. Pity.