As a last hurrah I went to the main store to use my Platinum credit by picking up some socks. That worked with no problems but I did overpay. The 5th Avenue store is a lot nicer, brighter, cleaner, and more modern that other Saks that I have been to recently that are closing. While there I went to try the 9th floor restaurant with memories of going to department store restaurants as a kid with my mother. I didn't even think about it at the time but was pleasantly surprised to find out afterwards that I received the $100 Resy credit for the visit. It showed up as L'AVENUE CAFE 41457 NEW YORK NY.
As far as the experience I won't go as far to say that the restaurant is a dump but it does feel old, dirty, and worn out. Even though it reportedly opened in 2019 the restaurant itself looks like it was from 1970 (classic elegance?) and at a minimum needs a deep cleaning. It more matched the other worn down Saks stores that are closing than the rest of the building. Otherwise the food was decent but bland and the staff was fairly attentive.