...To do so??what kind??Permits? to do so legally? They want to ride during Lollapalooza and for some Cubs games, but dont know if they need special licenses that allow them to do so. They are from West Palm Beach ,Florida, and operate down there, but may make the trip up to Chicago to ride this concert festival. DO THEY NEED ANY SPECIAL LICENSES>?? ARE THEY OKAY TO JUST "SHOW UP" AND RIDE, AND CHARGE?? Are they gonna have to have any permits of any sort to be able to ride w/o any problems?? Thanks for the help!!