A Special VFR Clearance can get you into or out of an airport with low ceilings and visibility. But do you know when you can use it, and if it's a good idea?
Have you ever heard "clearance void if not off by 1235 Zulu?" It all comes down to one-in, one-out rules for ATC managing IFR traffic at non-towered airports.
It's your responsibility to determine if and where icing conditions exist. Make sure you're using the right weather products to determine the potential for icing conditions on your flight.