Country mouse City mouse

We recently moved from our island living home to a suburban/urban area. My family is definitely the country miuse in the city. Today's case in point...the kids grew up swimming/playing in the lake...crazy fun times. Here in our new area there is a town pool...complete with lots of people, lifeguards, and chlorine. We hardly know what to do ... so stringent... what do people actually do in a pool full of people and rules? I'm not being facetious...seriously, either than purely dipping g in to cool off, what do you do? I'm sure we'll get used to it :)