Keep in mind that this is not a diet--it is a way of eating. This is your way of eating for the rest of your life. Make it enjoyable not a life sentence. Are you planning to live the rest of your life without a single indulgence? I think not--just remember not to go wild and eat everything in site. Remember portion control! Don't feel you need to eat just because it is available and included in the cruise price. When I think of the cost of doctor visits, medicines (blood pressure and colesterol lowering) for the past years not to mention the higher cost of plus size clothing, I head to the gym with a water bottle.
Enjoy vacation but remember you are in control of what you eat--the food does not control you!