I love rare stuff like this.
WWE used to run shows in places like the Melody Tent in Hyannis, Massachusetts during the summer months in the 90's and early 00's.
Here is a clip from the Musical Theater in Warwick, Rhode Island. A theatre-in-the-round building that seated a couple of thousand people at most where the fans were packed in tight and the wrestlers entered from the concourse area.
Handheld footage, obviously, but here is HHH v Mankind from an event in 1997.