Definitely has changed. Back in the 60's and high school, while a popular independent ice cream shop/café remains popular even today, THE place to be seen was McDonalds, backing into the slot and the parade of classmate's cars going by, and who was going out with whom. Both remain in business today, outlasting the chains, such as Lums that I would frequent with friends after a 3-11 shift at the hospital.
Today, several shops and expansion of the café concept to include sidewalks which didn't exist back in the 60's and 70's. Actually, one of my favorite is a bike theme café located in a 50's vintage strip shopping center a few store down from an LBS that apparently the only one in town that knows how to spell Campagnolo as they stock the products. And then there is the upscale street that I work on that is really a throwback in time with open park, bandshell, and RR station along part of it. This is sidewalk café dining central laced with high end stores along a 2 lane brick street. The biggest problem is parking and the inordinate amount of time people spend in the café, impacting parking for other businesses. It is not that there isn't free bulk parking lots the entire length of the street (6 blocks long), they want to parallel park along the street (3 hour time limit) rather than walk a block from the bulk parking lot (4 hour time limit). Gets to be quite a political issue.