It can wait a week, Month, Year, Decade, no rush.
I grew up with Propane (3 buildings and an oil well pump) all the regulators were open to the elements, not one was covered. The cover is cosmetic.
However on a travel trailer... I would cover for protection from road debris.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times