My father and I had lunch at a McDonald's in Milan last year.....because that is where our host's daughter was begging to go. We said sure beccause they were treating us to a day in Milan - and a day in Cinque Terre the previous day.
I first traveled in China in 1982, when China was just beginning to allow foreigners to travel there. You could only go on a tour, that had to include a "National Guide," one selected by the national tour service, in addition to the guide from the tour company. Ours was an English teacher who had been informed that he would spend his off term escorting Americans, since he spoke English. He was absolutely wonderful.
One thing puzzled us. Every time we took a break, he would offer us Coca Cola. He seemed disappointed that none of us wanted it. Then the tour company guide tipped us off. Coke had just been allowed to market in China, but could only sell in certain stores where only foreigners (and certain bigwigs) were allowed to shop. The Chinese guide had fallen in love with Coke, but could only get it if he was buying for foreigners. Ah! The light bulb went on.
We suddenly developed a craving for Coke. Sometimes, a few of us would change our minds and ask the Chinese guide if he could do something with our unopened bottles. Since the guide would get into serious trouble if we tipped him, this was our way of getting around that.