Ciudad Autonoma de Buenos Aires
The German original rules are pretty about this.
They state something like:
The current player performs two actions (nothing like "may" here):
1. Draw two cards and place tokens etc.
2. Move adventurers
So, card drawing is mandatory, the movement not. So you can move zero, one or two adventurers (or move one adeventurer twice).
Hope this helps!
Great, that's what I thought. Thank you.