Here's another view of the restaurant at the Belgium Pavilion from the 1939-40 New York World's Fair.
It looks like they had quite a staff on hand, doesn't it? This is actually only part of the crew as I have other shots of different waiters, bartenders, etc. It would be interesting to know how many patrons the restaurant could seat and how large the staff was.
I would love to find a menu from the place as well. I'm willing to bet they served some fine meals there indeed.