Ordering in a cafe, restaurant or pub

When we order something in a cafe, restaurant, bar or pub, we can use the following expressions:

Can I have an orange juice, please?

Could I have some cheese and tomato sandwiches, please?

I’d like a glass of mineral water, please.

I’ll have steak and a jacket potato, please.

Have you got any ginger beer?

Do you have any prawn cocktail crisps?