An Evening in Sano

Thursday evening the Amy, Sheila, Geraldine and I left Roger and Terry at the hotel to get some rest and ventured out into the city of Sano. We were heading to 7/11 to get some cash from an ATM and wander around a bit.
The first store we went into was a stationary store and I made my first purchase using yen without a hitch. However, I was only saved by the fact that the cash register was visible to me as well! We then went into 7/11 were we encountered our first Japanese faux pas (that we know of!) on the trip. One of our team members purchased a soda then opened it up to take a drink when the clerk started squawking and gesturing to her. The clerk was very nice but made it clear that we were not allowed to open any items (including purchased ones!) in the store.
We then passed through several grocery and sundry stores until we hit our next problem. We entered a Walgreens-type drugstore and were unceremoniously kicked out! We weren't sure what we had done until someone later told us that it was likely simply that we were foreigners!