Hey Brescue, I have a 2012 27RL, the drains are located just behind the rear step (toward the rear of trailer). Located on the same side as the doors. On mine, there is a white tube hanging down with a black cap on it. Be careful, when you unscrew the cap, there is a plastic plug inside the cap, don't lose it.
The hot and cold low point drains are near the drains for the black and gray tanks. Just in front of the pull handles and tucked away above. they are blue and red. The drain for the fresh water tank is toward the back between the step and the bumper.