There will be 3 drains. One will be by itself for the fresh water tank and 2 others next to each other for the hot and cold side of the fresh water system.
There are many different places they "hide" them, behind the axles, along the edge of the floor, and maybe covered in expanding foam.
Best to get a mechanics creeper, lay on your back and explore.
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.