Frozen key-less entry

There is no external lock mechanism (like a key hole) to get wet and freeze.

Locking and unlocking should not be an issue as it is all internal.

The door handle and the door itself could still get frozen/stuck to its mating surfaces as any car might do, new or old.

Sounds like you will have that part under control with the de-icer as you have in the past.

Did I address your question as you meant it?

The Medic

With key-less entry you might have a lock in the drivers door. Spray it with a dry graphite lube. Then to keep the doors from freezing shut, go buy a can of silicone spray. Take a rag or paper towel and spray it with the silicone. Now wipe down the weatherstripping seals around the doors and trunk/hatch. Give them a good coating on all the places that hit the doors. Do not spray it on them, it will get all over inside the car and small and make things slippery.
Next take some white lithium grease or fluid film. Shake it up very well and spray that on the hinge pins and rollers for the doors, hood and trunk/hatch to keep water from causing issues in them. Spray the latches as well. That should take care of any freezing/sticking issues with the doors.