All true with one caution:
All freezers/fridges are heat exchangers, so when you wrap it in blankets, be sure to NOT cover the heat exchanger coils or restrict airflow to them. they are usually on the back or the bottom. IF you do NOT do this, your freezer will run and run and actually HEAT UP your food.
Yeah, modern freezers have a “hot side” - one side that releases the heat - don’t cover that up.