Here’s the travel news that matters this week. Over 50 of Marriott’s biggest hotel owners just signed a letter to the CEO demanding a bigger slice of that billion-dollar credit card pie. That’s right—Marriott rakes in nearly a billion a year from co-branded cards, and the people actually running the hotels say they’re not getting enough.

These owners represent nearly a thousand properties. They’re not bluffing. This is a power play that could reshape how hotel loyalty programs work.