Here's an idea, talk to a travel agent or a liveaboard booking agent - they get all kinds of information about demographics and popular destinations and activities and can help you find a good match! And they want to sell vacation trips, so they are motivated to help you!
I've posted this question below in the LOB marketplace forum to see if we get any answers:
Demographics and Liveaboards
I've posted this question below in the LOB marketplace forum to see if we get any answers:
Demographics and Liveaboards
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