2014 honda civic won't stop beeping in accessory mode?

I was in the drive in theater with my cousin sister and boyfriend and I tried to get the accessory mode on the car started so I can just hear the radio without turning the engine on. My car is push to start. But when I had it on accessory mode it kept beeping! And I read the owners manual, it said to turn the accessory mode on and press and release the valet 3 times but what the heck is the valet! I looked that up in the owners manual and it said it is the key! So I pressed it and sometimes it would still beep and sometimes it didn't! I don't know exactly what to do to keep it on accessory mode without having to hear those annoying beeps!

Wetwt