Thanks so much for the replies so far!!

Bailyou, WorkingK9s and Dobeman, good points about the helpers, i totally forgot about that! I'll make sure i ask about that when i go.
Some other questions:
1. What are the differences between club, trial, training and teaching helpers???
2. Should i not take Dante along? When i asked if i should bring him along, both places said to bring him along. One of them said to leave him in the vehicle until they say it's ok to bring him out. Is this typical? What's the reason behind it?
Both clubs seem to accept all breeds. I say "seem" because i've only had a brief telephone chat with one and two quick emails with the other. I mentioned straight up front that i have a Doberman, and there wasn't any comment on that. I guess i'll find out more about that when i visit!
There's actually another club further away that has quite a number of Dobermans. I just wanted to check out the closest ones first, becasue the closer they are, the more often and easier it is for me to go for training.