“Anything to drink?”
Anything to drink? shortens Would you like anything to drink? It is a standard restaurant question asking whether a customer wants a beverage.
A1-32 / CEFR A1 / EPISODE 32
Ordering a meal
SceneAt a restaurant.

WORDS & CONTEXT
Anything to drink? shortens Would you like anything to drink? It is a standard restaurant question asking whether a customer wants a beverage.
When ordering, have means to eat or drink, rather than possess. I'll have … is a standard way to choose an item. Here Frank orders on Tina's behalf with She will have the spaghetti.
Basically means essentially or approximately. Tina stretches the logic by claiming that extra tomato sauce makes the dish almost pink. Frank's It is red, Tina. answers that claim.