Originally Posted by
yscleo
My wife has Cobalt. Oh, that's Canadian Amex Cobalt card.
I was curious, and found this
article about Marriott Cobalt. In comments, one guy said he was Cobalt and it didn't really get him anything.
Among the benefits, meeting or greeting with the GM don't sound interesting. But this one is intriquing:
* At St. Regis, personal invitation to a
ritual moment 
I think the ritual moment is the champagne sabering, which I have always had a personal invitation to via a butler or other associate at check-in, and I’m an Ambassador. How much more personal could it get?