Not that I know of
We were told long pants and colored shirts for men and business casual for women. However when we were there men were in golf like shorts and shirts; there were woman in dresses, slacks, skirts, crops. I'd say it's more cape casual.
Resort casual is the general dress
No, there is not an official one that I know of. However this is an overall upscale place where business casual was accepted through the. All clothing seen (and worn by us) was clean, neat and appropriate for a summer resort.
Not that I'm aware of. We were there in the evening for drinks. Most people were dressed casually - shorts, jeans, maxi dresses. There were also little boys (and a few men) wearing jackets. I think you could go with what you're comfortable with.
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