And consumers, especially families, will soon see how the rules will affect their wallets — forcing them to pay higher unit prices for smaller bottles.

Typically, a pizzeria charges $3 for a 2-liter bottle of Coke. But under the ban, customers would have to buy six 12-ounce cans at a total cost of $7.50 to get an equivalent amount of soda…

Domino’s on First Avenue and 74th Street on the Upper East Side is doing away with its most popular drink sizes: the 20-ounce and 2-liter bottles.

“We’re getting in 16-ounce bottles — and that’s all we’re going to sell,” a worker said.

He said the smaller bottles will generate more revenue for the restaurant but cost consumers more.

It will also trash more plastic into the environment.