My home fridge was 3 screws to install or remove the icemaker... If you aren't going to use - I would just take it out - disconnect the water lines once - and never worry about winterizing it again...
It's one of those conveniences nice to have at home (brick/mortar) - but doesn't seem worth the effort for winterizing.
(Don't have it at home anymore since last one failed and flooded the kitchen
... The 'price per ice cube' didn't make sense to replace.)