This feature is
listed as a
MasterCard benefit. I take this to mean that MasterCard, not Citi, has contracted with Carlson Wagonlit. This suggests that it will also become available on other MasterCard World Elite products -and- that Citi will not determine when the benefit is changed or withdrawn.
The terms are poorly worded, but I read the final sentence to mean that the room must be occupied by the primary cardholder. Other interpretations are plausible (see post 26, but note that it was booked under a prior version of the program):
I tried to book 2 rooms this week and they shot it down multiple times. Told me that the 4th night free benefit was for the primary cardholder only and I can only occupy 1 room. For someone reason someone else got it to work a while back.