A vast majority of meals are included in the price of the cruise. This includes poolside buffets, making for the unusual experience of walking up to the counter, ordering a burger and walking off without any form of payment. On the large cruise lines there is typically a buffet on one of the upper decks, available during all meal times and the infamous midnight buffet. Additionally you may find a pizza or sandwich bar open 24 hours a day.   Room service is usually available at all times at no extra charge (a $1-$2 gratuity is traditional).