We are a couple and will be in Cologne from 29 Dec to 31 Dec(tentatively). Can someone please advise if we will still get to see all the top sights? Epscially the famed chrismas markets- since we arrive after xmas day will we find it closed? Will we miss out on anything either due to the holiday season or due to it being winter? Its our first time there so want to be sure. Any other advise on spending holiday season there is much welcome. Thanks in advance!