このへんは伝聞なのですが、こんなかんじだったそうです。
「料理だけでこんな金額いただいたの初めてです」って店員さんが言ってたらしいよ！(笑)

料理の注文に関しては、ナズさんに料金払って、ナズさんがあとでまとめて払うシステムでした。

This portion is based purely on hearsay, but I hear this is about how it felt.

Apparently, an employee was saying this was the first time they'd ever received such an amount of money just for food! :-)

Regarding the food orders, our system was to give Naz-san the money, and then Naz-san would later put it all together and pay.