We fly into FRA on the 23rd to hit the end of their Christmas market (fingers crossed for no flight delays), we'll be staying at the Westin Grand that night then heading out the next morning, I think Christmas lunch is at 2 or so in Monheim, so that's our targeted arrival. Lufthansa has direct flights for $100 USD so we're looking at the cost vs. delay potential comparison. We saw that the rental cars have the option of winter tires, are they required at certain times of the year or they just fit them if you pre reserve them?
Thanks for the link but when I try to put in my trip I get an error that 24/12 is too far away to look up tickets/times.