@Tophat320...
I have no idea if they expect any perticular type of dress code in Saarlouis now, but when I went, I wore my suit and tie. Had to take some of it off again for the medical before hand, but thats not a train smash
If in doubt, rather overdress than underdress...you can always take a tie off if you feel so inclined. Its more ambarrasing to stand there with NO tie, when everyone else is wearing one
Good luck again