The only part of their reply that I can see their side on is about the sushi. I think most grocery stores that stock fresh sushi truly only have it available around what would be considered normal meal hours. The same seems to be the norm for any "cafe" type food - fresh subs, hot soup, salad bar, etc. Heck, even rotisserie chickens are only guaranteed to be stocked from 4-7pm in my Giant grocery store though I've often been able to buy them as early as 11am. I tried once asking around 9am and they were not finished cooking yet. But back to the sushi, I personally would not want to eat sushi that has been sitting in a case all day or overnight. Fresh is key when it comes to sushi. If you were at the store early and saw someone working in the sushi department I see no reason why you couldn't ask them to make whatever it is you wanted as long as you have the time to wait for it. It's not inconveniencing them. Isn't it their job to serve the customer?