Tandem demos are legal and into stadiums as well.
The tandem demo is something that takes exceptional skill and discipline to execute safely and is not for everyone with a tandem and PRO rating.
Through the efforts of DZO John Wallace working with the USPA, the FAA with the assistance of late Senator Arlen Spector, and the Relative Workshop, a waiver was obtained by the GERONIMO! Skydiving Team from Elkton, MD to perform a tandem exhibition jump into Veterans Stadium at night with the Eagles football team mascot "Swoop" for his debut. The jump was executed on the night of August 21, 1996. www.geronimoskydiving.com