I speak American English so I'm used to certain words that may not be used in British English. Some words might be: order, wine list, wine selection, check (as in bill), beverage, bottle, magnum (of champagne, wine, etc), rare, medium, well done (for steak), dessert, bread, soft cheese, hard cheese, side of (when the customer wants something added to the meal- ex. a sandwich with A SIDE of french fries) and come with (a customer might ask what a meal comes with to mean what the meal includes). Don't be afraid to ask your fellow waiters- they know a lot about their job and dealing with people. Hope it helps :)

don't listen to him, he obviously doesn't understand the point of this site. Your English looks good. Your new job is a waiter? I have never been a waitress so I can be of little help but I wanted to give you some encouragement to counter the rude comment before me.

That is kind of messed up..You should know pretty much everything, but you could type in waitress english lessons in google. You may find something useful :P