We have a 2013 26RLS which we love with the exception of the low point drain. What a huge pain.
The low point drains are located under our bathroom sink but are located all the way to the right. Basically, they are located right where the feed line comes through the vanity to the toilet. It's next to impossible trying to maneuver your body through the vanity cabinet and try to reach the plunger valves.
Last month we brought the camper to the dealer to have them swap out the drain valves. They ended up removing the plunger valves in the camper and installed new hose and fittings. They then installed the knob valves underneath the camper so we could drain the lines quickly and easily.
When we picked it up the worker told us it was one of the worst jobs he ever had to do and was so happy when it was finally finished. lol