I assume that the 1950s style American diner would be for the locals. I certainly wouldn't fly thousands of miles to go there. On my trip to Russia, Ukraine and Belarus I only visited an American business one time. McDonald's. Why? We did a LOT of walking that day in Kiev and wanted to sit for a spell. We were also curious to see if the french fries tasted the same as in the USA. They did. Here in the USA, I have been to a few Russian restaurants. Before my trip I didn't know if they were close to the real thing or not. Now that I've been, they seemed close to the real thing to me. Now I appreciate that those restaurants are here in the USA. Maybe Russians that have been to the USA and liked it do the same for the 1950s style American diner?
Scott