Prior to the day of the sail, give your guests some ideas as to what to bring and if they need to make any preparations. It’s also important to make sure folks come fed and hydrated, even if there are plans to eat and drink on the trip. There seems to be a myth that if they are prone to motion sickness, they should not eat at all before sailing. The exact opposite is true! Also, have crackers on board that can be handed up easily just in case motion sickness becomes an issue.