WORLD'S MOST SKYDIVERS AT A TIME!!!
Other than that, filled capacity w/ people from O'hare, or Jumbojettum said a driving range, I say a championship golf course! Not quite, but maybe a huge Dave & Busters-type restaruant w/ miniature golf or something else, or maybe an entire aircraft of sleeper suites like the old railroad. BTW, what happens during
clear air turbulence?
I don't know, so this is my signature.