Are you taking at least one disguise?
I say this because when people realise you are on board, you will be hounded day and night by ladies who desire you, and men who'll want to know your secrets to being so perfect.
So you'll need some way to go incognito.
Please try to stay away from the captain. If they find you, they will almost certainly ask you to captain the ship, which then means it's not much of a holiday for you.