•The Four Seasons is rolling out “15-minute room service” at all its hotels. At resorts with long distances between the kitchen and rooms, the wait can be 20 minutes.

•At the new Public Chicago Hotel, guests order by number, and food from celebrity chef Jean-Georges Vongerichten arrives in to-go bags outside the room in 10 minutes.

•At the Buttes Resort in Tempe, Ariz., a $10.95 “Market Basket Lunch” in a bamboo basket is guaranteed to arrive in 20 minutes — or it’s free.

The new world of fast-food room service is being driven by the fast-paced lifestyles of travelers and demands for convenience and instant gratification.

“One of the greatest luxuries in the world is time,” says Guy Rigby, a vice president at Four Seasons Hotels and Resorts. “Gone are the days when room service is for people who want to sit with their little candle and flower and beautiful appetizer.”

Some of the hotels offer packaged food to go for travelers racing to the airport or determined to drive to their destination without stopping.