Yes I had guests who would leave for the day while keeping the AC on, and it seemed to be running constantly. Even though I don't share any space with my guests I can hear the rumble of the AC. My rules say not to leave the AC (or any other appliance) on while gone. So I emailed them to remind them. They ignored my email until the next day and didn't even address the AC issue when replying. That 2nd day they were gone for about 11 hours... with the AC running!
The next day when they checked out I discovered the AC thermostat was set to 67 degrees! They also left the coffee machine on and the fan in the bathroom on. So they were just all around irresponsible guests.
After this guest experience I now keep the remote control. I'm also going to be replacing the bathroom fan and heater on/off switches with countdown timers. In my listing I now discourage guests from staying who want a really cold room.