Hamm is large indeed, as are the crowds visiting. Especially the september edition is bizar in terms of crowdines. However, in Europe it simply is the place to be if you are out for something special.
It is not completely true that most people don't speak English. (You have just talked to the wrong people there gloom_kitty...

). I myself am from Holland so I manage both English and German (although if ever possible I try English and it works most of the time).
It is the one fair I never miss. Each time I get anoyed by he crowds, but each time I manage to sell some of my offspring and every now and then take some very interesting animals home...
Their site has pictures too, to give you an idea;
http://www.terraristikahamm.de/index.ph ... 46&lang=de