Are additional card members free on the Marriott Bonvoy Brilliant?
There's no additional fee to add authorized users to the Marriott Bonvoy Brilliant American Express Card. Keep in mind additional card members don't receive most of the premium perks offered to the primary cardholder. One exception is the $100 property credit on qualifying stays of two nights or more at The Ritz-Carlton and St. Regis hotels and resorts, which both the basic cardholder and any authorized users can use.