I have a 2014 Forest River class C. It only has one low point drain, on the hot water side. The cold water side is drained by removing the filter canister.
It's not the best system. The pump is at the absolute low point and is above the canister fittings. So you have to either disconnect the pump to drain those lines, and then run it a few seconds, or you have to use the pump to pump antifreeze. Forest River expects the user to pour several gallons of AF into the FW tank and then pump from there, which will take care of the pump and its lines. (I hate that because we drink water from our tank, and the taste is a problem with AF usage. So I added a winterizing fitting by the pump.)