Waiter taking the order

Are you ready t order?

May I take your order?

What would you like to drink?

Complaining

Excuse me, but my meal is cold.

Excuse me, we've been waiting for over half an hour for our meals.

I'm sorry but I ordered the side salad not the vegetables.

Excuse me this steak is over done, I ordered rare.

Excuse me: I think there's a mistake in the bill.

Paying

Could I have the bill, please?

Do you accept Visa?

We'd like separate bills, please.

Is service included?

No, please. This is on me. (When you wish to pay for everyone.)