Monitor tops are just fine for beverages or food. They were made before frozen foods were around, so keep that in mind. I have multiple monitor tops, so defrosting is a breeze. Transfer food to another and shut down the one to be defrosted. All you need is a pan under the evaporator and go play on-line awhile!
Don't use sharp objects defrosting or you might kill it. Use proper respect, these fridges are at least 71. This is the first series a DR. They're more finicky, but very cool. There's a little heater behind the name plate on the neck of the unit that does go bad. If so, they don't run as well. People seem to think fridges should run well in an unheated garage. There you have a condenser coil trying to get warm in a cold room so the evaporator can keep the cabinet cold. It's just overly hard on the fridge. I seem to remember reading a 1960's Gibson manual that recommended NOT using the unit if the temperature was under 60. Well, that was an ugly avocado Gibson, not a 1928 GE! Put that in your house properly displayed and hide a crappy chest freezer in the pantry.