As someone in the hobby, technically, any unmanned aerial vehicle is a drone. Yes, for some, that word means "weaponized", but it's obvious that your park flyers aren't weaponized. It's a good opportunity to inform the public about the hobby, safety, and different characteristics of drones (even RC drones).
Additionally, flying a multi-rotor without some level of autonomy can be quite dangerous. Most models have sophisticated controllers that will maintain altitude and position with no input from the pilot. I would consider this autonomous assistance. It takes a LOT of skill to hover (with no controller), so some level of autonomy is required for safety.
Also, I would not fly one of these without the safety measure of Return To Launch (or Home). RTL will put the multi-rotor into a fully autonomous mode if 1) your transmitter signal degrades or gets cut, or 2) you get lost or loose orientation (which is quite easy with these). RTL will bring the multi-rotor to a set altitude, fly directly back to it's launch location and autonomously land. Your most common DJI Phantom models all have this built in and (normally) require GPS lock before taking off.
I would ADVERTISE that it has an autonomous mode, for the safety of the pilot and spectators.