The only grocery that I know of in CH that is open on MS is Kol Tuv, but I hate shopping there...
When I am in Empire kosher this week, I will make a point of asking the manager if he can open that saturday night. If others do the same, he might be willing.
Last year, I swiped all my cards at Basil. It was a big hassle because they are very busy on Saturday night. My other thoughts for places here include Sushi Spot and Pomodori.