Also a piece of cake then.
Open the outside fridge panel and remove the supply line to the ice machine valve (hose bib size fitting). Have somebody hold it away from the rig and you can shoot antifreeze through it (valve for it is under the sink).
unscrew and drain the icemaker line on the bottom of the valve to drain it, then reconnect everything back up. (be careful with the small white coiled wire wrapped around that line, as it is a heat trace for the fridge valve and line).
You can remove that supply line and flush when de-winterizing if you like to avoid some of that pink ice, but your first batch or two may still be pink.
If you prefer to blow out your lines in lieu of antifreeze, you can do that line as well, but I'm just not sure how you would do the dishwasher with air.
