Finally made it to RD. I called them and they said if I didn't have my EIN, I could still get in and just bring it later for them to update my records. I have a PA sales tax license, and that's all you need. My license has nothing to do with food, and they didn't care. I can't speak for other states, but when I signed up for the sales tax license in PA, it was free so long as the business name included my real name.
Norma's pics do an excellent job of clueing you in to some of what they have there. I was a little disappointed by the prep section. Not as much stuff as I expected. I didn't see any baking stones and they only carry American Metalcraft peels, which I don't like. I have one of their wood peels and it is too heavy.
For Mozz, I saw that they carry NY style Polly O, low moisture Sorrento, Saputo, Belgioso, and a couple others. They have some shredded blends. I did not see any Grande products. They have lots of other types of cheese as well.
For flours, I noticed specifically that they had Pillsbury So Strong and Balancer, All Trumps, and GM Full Strength. I wanted to get Balancer, but they had All Trumps in 25 lb. bags, so I went with that.
Lots of other good stuff as well. Huge cold area withal manner of meat and seafood.