Insight
Marriott's CFO mentioned on an earnings call that the rebate program will start impacting financials in the latter half of the year, suggesting a recent implementation.

Marriott is launching an ITR incentive program for U.S. & Canadian franchisees, rebating up to 50 bps of gross room revenue for hitting guest satisfaction scores. This program is a response to anticipated growth in credit card fee revenue.
Marriott's CFO mentioned on an earnings call that the rebate program will start impacting financials in the latter half of the year, suggesting a recent implementation.