This seems to a NYNY thing vs the other MGM properties. RFL has always been know to include all good and drink, but not the higher end restaurants. RFB was always know to include all good, drink, even high end dining. And, in the case of Bellagio at least, even the mini-bar was included.
If not RFL or RFB, sometimes they will say $100 daily food credit, or something like that. But, NYNY seems to be an exception. After seeing this happen more than once, we will NOT be returning there. Too many other options that are upfront with what they will OFFER.