from:
Tulsa Fire Department says Trump rally attendance was about 6,200
" Andrew Little, the department's public information officer, told The Hill that a fire marshal recorded the tally at around 7:30 p.m., noting that the figure applied to scanned tickets from the event. The number did not account for members of the media, campaign staff and those in box suites. "
So there were more than 6,200. The campaign staff, the media and the people in box seats could have accounted for another 1,800 to bring it up to half full.
As for the scamming by Tik Tock, there were 100,000 tickets reserved. That wasn't all internet.