I shied off from disagreeing with JoeN on this as I know Joe knows his food. But, hey, so do I. I had a lovely lunch by myself in the Metropolitan..
quoting my NYC diary: I got myself a dish of ravioli with mushrooms and truffles with asparagus and red peppercorn sauce, plus a glass of wine...and wrote in my diary and read a little book I bought on Bonnard. Watched myself doing this, sitting in the Met eating ravioli.
It wasn't all that expensive. I'm used to Los Angeles and San Francisco, fer heaven sakes. I was so avid for the museum it was as if my feet were glued to it by magnets for days , and that first day I was there for a lot of hours on end, six or seven.
Edit to add that I had a light breakfast - coffee and a croissant perhaps - with PaolaL in what was then the Met cafeteria. That was when we first met, and had a good long talk with absolutely no one else in the cafeteria but a server behind the counter. Whatever it cost, not much, it was well worth it. She knew the museum cold, probably as deeply as Roberta does, very attached to it.