It's often a good idea to book a table / make a reservation if you go to a restaurant at the weekend. Many restaurants offer three-course meals which include [have as part of the meal] a starter (e.g. soup), main course (e.g. meat or fish) and dessert (e.g. fruit with ice cream). Prices sometimes include 10% service as well [amount of money you pay for being served by the waiter]. If service isn't included, it's normal to leave a tip [extra money you give to the waiter/waitress].