The phrase "are having diner" is not correct; it should be "are having dinner." You can use it to describe an ongoing action of eating a meal in the present tense.
Example: "They are having dinner at the new Italian restaurant tonight."
Alternatives: "are having a meal" or "are dining."
For dinner you are having milkshakes and you are having them. in a diner.
First off, contrary to popular opinion, Meg Ryan's fake orgasm, "I'll have what she's having" -- diner display is the least funny moment in the otherwise charming romantic comedy.
Mary and Paul Emmons were having lunch in a diner called Happy's.
He was having coffee at a diner in Chelsea, near the apartment he shares with Wilma Mondi, an actress who has been his partner for 15 years.
"It doesn't bother me," said Peter Angelakis, 82, an undecided Republican who was having breakfast at the diner, the Country View Restaurant, with his wife when the mayor stopped in.
The reveillon dinner was a festive feast, starting with a delicate fish pastilla (layers of flaky pastry with filling), then chicken with olives, boned stuffed pigeon, or whole fish stuffed with semolina and raisins, all accompanied by pleasant Moroccan red wine (French diners were having Champagne).
And yet Mayer, whom I met while she was having breakfast at Fast Eddie's Diner, in Hampton, had forgiven Trump for it.
We're having breakfast at a local diner, underneath a mountain of slag from the old copper mine that is the reason for Bisbee's existence.
But nothing happened until the night of July 21, when she and a friend were having coffee at Happy Days Diner on Montague Street in Brooklyn Heights.
The other day, he was having a hamburger at a diner in Connecticut when a electronic version of the song he didn't know existed came on the radio.
