Is it really too much to ask to have at least one cashier working at 10:30 pm on a Sunday?

No!

No, it isn’t.

This Ralph's really isn't that busy to justify a second cashier. The Vineland / Magnolia store has 10 to 12 people in cashier lines, plus 12 in the self checkout lines at the same time. The cashier needs to use the bathroom too.

And is always the same lady her name is Sheryl and sometimes the line is huge they need 2 more people