Through the use of superfluous prepositions concepts are forwarded as relative to the initial statement and, thereby, hitch a ride and share in the credit.
Examples...
It is always great to get together with family.
But we say... It is always great to get together with family on the holidays.
The issue is that getting together with family is always great. The holidays get a free ride and an attachment to the truth of the statement and, by association, become the defining part of the statement.
The same goes for...
Kids love to get gifts.
vs
Kids love to get gifts at Christmas.
The fact is contained in the first sentence. But the tagged on prepositional phrase gives a simple straight forward fact to a particular date.
I think we often transfer power to days, locations & happenings by tagging on certain, but not the only, times these things occur.
Just sayin'
Carry on.