my wife was a total landlubber. I made very very sure that her first experience with boating was very very good. That meant chartering a 41 ft. boat so she had plenty of room. That meant putting her every favorite food and drink on board. That meant making damn sure that there was excellent shopping at several stops and that she had plenty of money in her pocket when she got off the boat. That meant telling her repeatedly how good she looked in boating clothes (that was very true and she knew it so no prob there)
You get the idea. First impressions matter a lot. Go all out to make it perfect. Since then she has been bugging me to go to the Caribbean so we bought a boat and are doing the Caribbean 1500 next fall. The promise of palm trees in January is what really sold her.