So I'm rewatching Season 5 and I think Sandy should be doing the same thing to learn from herself. First of all, when you find yourself in a pickle because you fired a perfectly good chef in the middle of the season, and your bosun's chef boyfriend just happens to show up (like it wasn't planned or anything), don't whine to get him to agree to take the job. Just offer it. It sounds childish and unprofessional. PWEASE, PWEASE Tom, I'm weally in a bind! Also, when a previous charter guest (Johnny Damon) shows up, it's probably not a good idea to greet them with a reminder of their last charter if it wasn't great - first words out of her mouth: "Oh my gosh, I'm so happy you came back so we can make it right for you - especially in the food department."
Edited To Add: When the bosun radios you that one of the crew is having a medical issue/heart palpitations, your response should probably be, I'll be right there - not, Tell her to come to me.