Hi, I was thinking about flying direct into DUS on flight that arrives at 9 pm. I have a flight the next day to the U.S. that leaves at 8:20 a.m. Any ideas for what to do in between? It is a Friday night, is there easy transportation back and forth from city center to airport? Cab? Train? Thanks! Thinking I may spend last night out on the town and sleep on the plane back rather than get hotel room for couple of hours.