I'm going with my mother to visit CR from December 11-27 and have concerns regarding renting a car for the duration of the trip. Being that we're native Central Texans, we don't drive very often in inclement winter weather. Are we at risk for renting a car for this trip? We are coming in through Vienna, going through Brno (where we have relatives in the area) and proceeding on a route that follows along recommended UNESCO sites, including Prague of course. We will loop through Olomouc and return back to spend Christmas with the same relatives before departing Vienna. Any suggestions? Also, tips on clothing (as I heard that this winter is going to be colder than usual) and other places that shouldn't be missed in this season would be greatly appreciated! My mother's first language was Czech, and I'm learning Czech, so communication shouldn't be too much of an issue. We are so excited!