What is the best hackable drone brand these days? Where you can remove all this bs remote ID and GPS disobedience?
It may be simpler to build from scratch using parts from a hobby store if you want a drone which cannot be tracked back to you or your credit card
$150 will build you a 7" with a reasonably long flying time, a bit more and you can do some pretty impressive things. You still need a controller but those can be had for cheap as well. The main issue would be hiding it for pickup until after the event.