all-you-can-eat

adjective2

1. •
   Offering unlimited food to a diner at a restaurant for a fixed price for as long as the diner continues to eat.

   • It's an all-you-can-eat deal, and students can use their meal cards at numerous campus snack bars and sandwich shops. — 1995
2. •
   (figurative) Offering unlimited service for a fixed price per time period.

   • "Last year, when they came out with their all-you-can-eat, $19.95 per month service, it nearly brought them down." — 1998