Seal the hives, otherwise hives within forage distance will rob out the honey.
Capped honey will not ferment in the cells for quite awhile, uncapped honey will frement quickly if not robbed out.
Uncapped honey is a magnet for robber bees plus other critters than dine on honey.
Bees can utilize sugared (crystalized honey) without problems, they will forage for water and reconstitute it.
About Wax Moths, yes, brood frames are their main source of diet within the hive, but they will consume sugared honey, pollen, and combs as well.
If you can keep the critters out of the hives you may be alright. But be prepared for all your efforts to seal and protect the hives to fail. Of course you could wrap each hive liberally with suran wrap and even keep the air out.