Suz, I would say it's fairly similar here in our small city, which has multiple college campuses, although it's not a tourist destination except for our mall which was enlarged and designed to attract Canadians. Seriously! Our mall is the tourist destination! Who knew?! FWIW I hate our mall! It's too large and I rarely find anything I like there.
Our city is also located on a lake, but they have been clearing it of toxic waste for the past few years! I'm not sure I trust the clean up crew (does anyone here work with toxic waste? I need some scientific reassurance.). In any case, they say it's safe to swim in the lake now, but I have no plans to try. (Would you?)
Mr. Staysfit is a professor at one of the local universities/colleges. The colleges are all so different from each other and that leads to different style personas for each. I wish I could come up with a description as nice as yours about the different shorts and flip flops! Maybe thrifting would be the comparison. Everyone thrifts in college. However, one college campus thrifts for environmental friendliness and minimalism/ the other campus does it for their artful creative side. It leads to very different sorts of looks(right?). The minimal utilitarian, vs. the arty bohemian. The boundaries aren't time of year as much as geographic with a slight overlap of campus along one edge.