Waste tanks.....are you set up where you can dump them? If so dump/rinse then add some anti-freeze (mainly for dump line/valve protection)
Fresh water tank.......open drain and leave it open. No anti-freeze needed
Water heater......just remove drain plug and leave it out. No anti-freeze needed
(if you have electric element open AC circuit breaker until next time you refill)
Isolate & bypass water heater (valves on backside of water heater) no need to put anti-freeze in it when pumping thru cold/hot water lines.
Run anti-freeze thru toilet supply valve, faucets/showers (hot/cold) and low point drains.