The cameras are on from 8:30pm to 2:30am. So, there is really no time slot safe from the webcam. However, if you sit along the back wall directly underneath the camera, you will probably be safe. Just have the servers bring your drinks, and hide your face when coming out of the lapdance area until you get back to your seat.
But I think unless you sit right by the stage or the camboy takes a strong interest in you, no one will ever see you on camera.