I never ran a restaurant myself, so most of my knowledge on this matter is second hand. My mother ran a very successful restaurant in midtown Manhattan called Tsukiji Sushisay. In addition my stepfather was the accountant for several Japanese restaurants in NYC. I did however work the front desk for a few months, and helped out over the years with things like translating legal documents, making brochures, or creating their website. I translated the menu to English, and even taught basic 'sushi-counter customer-service English' to many of the chefs. "I'm sorry, we don't have spicy tuna." is one phrase I remember teaching them.
I also want to note, that I feel OK writing this because the restaurant closed its doors in 2002, and various statutes of limitations or whatever have run out. ^^;