Nothing to stop one getting on the phone and telephoning someone at destination to see what it’s like before departing. Nothing quite as bad as arriving with min fuel to then suddenly discover that one‘s options have suddenly dried up.
Except when the individual you ring is the pax, or a friend of his, your are to pick up. Experienced quite a number of CAVOK reports over the years when vis was as far as your finger tips in fog, fuel was never an issue though.