hello, i'm going to be in koln for a couple of nights on my way to prague and i would like to see the show referenced above. i would like to buy tickets before i get there to insure that i can get in the door, can anyone help me out with this? i've already searched the web for a ticket site with no luck. it would be greatly appreciated. also, auditorium size? 1000, 2000, 3000 people??