Here are a few to add to your list!!
Some are on Disney property others just in Orlando.
Seaworld is holding a competition Jan 27-28th
Nationals at the Swan and Dolphin hotel March 3,4,5th
Contest of Champions Feb 25 and 26 this is in the sports area in Disney.
American open is not on Disney property it is at the orange county
March 11 at the silver spurs arena
convention center March 24-26
Universal studios is having a National competition March 24-26
Spirit cheer has one at td watehouse Feb 25th
These are just a few I know of. Hope this helps your planning.
Does anyone know if Joe Q. Public can watch any of the competition?
Yes anyone can watch but most charge a fee to enter usually between 10-20 per day.