There is one of these in the town where I live. And yes, the carhops are on roller skates. Can't say the food is very good and I like 10 times more expensive now.
67 thru 71 could have filled the whole page. moody blues, jefferson airplane, jethro tull, yes, tangarene dream, carlos and wakeman, earth wind and fire, emerson lake and palmer, even seals and crofts. same for literary fiction about science (the real science fiction), same for odd and adverturous architecture during that period, ant farm and buckie, zomes and yurts, and so on.