Thanks for the tips. Confirms I don't need to AF the fresh water lines.
Haven't even peeked under the sink yet to see what runs where, but in general, drain tank, run pump thru faucets until runs dry. Drain water heater. Isolate pump possibly?, blow out lines through city water connection. Gravity drain line(s) to and from pump?
Put AF in traps, toilet and gray and black tanks.
Open up fridge doors
Cover it up.
RUn a little 120V heater to keep moisture down and temp up just better than cold storage for smells, woodwork,elect stuff etc.