Migros was my food life line while I was in Zug. Very nice selection of takeaway items, fresh baked…read moregoods, and produce. Although I do not speak Swiss German, I did not have any problems interacting with cashiers. Note that most stores not at a train station close around 7 pm during the week and are closed all day on Sunday. Also, bring a tote bag for your purchases. Finally, I did not have a chip-and-pin credit card (just magnetic stripe), but, as of this review, it was not a problem to use.