City Days, harvest festivals, regional holidays, and even … visits of amusement parks. There is a lot of things going on in public spaces! Good things cannot last forever though… one may even be tempted to say that the greatest advantage of events in common spaces is their fleetingness. Waiting the whole year for a few days of events makes them unique. However, how to prepare a space for intensive use? How to make hundreds or even thousands of guests feel comfortable?