You never know when you are going to encounter rough seas. We had rough seas going right out of Boston since the weather was bad the day we left. You can buy the bracelets at your local CVS/Walmart. Put them on and they work pretty quickly. You can take the Bonine/Dramamine but they do take about an hour or so to kick in. The package will give you the directions for how often to take the medication. Have also heard that ginger pills do the trick.