Denny's off-premise sales have more than doubled in 3 years.

Denny’s reported quarterly earnings this week and announced that off-premise sales have nearly doubled since the family diner chain launched Denny’s on Demand two years ago.
Off-premise sales accounted for 12% of total sales for the quarter, up from 7% when the company launched Denny’s on Demand in 2017.
“Delivery continues to drive the expansion of our off-premise business,” CEO John Miller told investors during a conference call. “These transactions continue to be incremental.”

Meanwhile, chilis, one of the last remaining chains not offering delivery, has decided to partner with an as yet undisclosed third-party delivery platform to offer delivery. CEO Wyman Roberts said the choice of at least one third-party delivery partner could come shortly.
“We clearly see the opportunity delivery could bring to our business,” he said of the pending decision for Chili’s.