>>>>> Socks with sandals used to be acceptable about 3 or 4 years ago but not anymore . . . <<<<<<<
it has never been acceptable
socks with sandals denotes a Yankee, Michiganeer, Snowbird, Canuk, or other sun culture deprived person.
If it gets cold, one dons a long sleeve shirt first, then a sweater, next long pants, then regular shoes sans socks, lastly snakeskin cowboy boots & socks.
One only wears socks & sandals if in the Andes far away from all known culture & civilized persons.