The following rule changes apply here on yucata.de:

• The Veto card is not implemented. (As a result, the same 9 cards from the 2-deck will be used every game.)
• The Caballeros in the Castillo are not hidden.
• The "You send 1 Caballero from any region from each player back to the provinces" card text has been changed to "You send 1 Caballero from any region from your fellow players back to the provinces" (only affects opponent Caballeros) to be consistent with the German rules.