The rules are whatever is written in the current edition of the shooter's handbook. The RO 1&2 materials are only supposed to help you interpret what the spirit of the rules are. That said, I have taken the RO2 class every year since it was offered just to hear the current interpretation.
The good news is that the RO 1&2 materials are online for anybody with computer access to read/download for free, so they're not some kind of special knowlege that isn't available everybody.
The other good news is that the whole point of the RO 1&2 classes is to make officiating at SASS events consistant throughout the country. So if you understand how a rule is supposed to be interpreted, it should be he same everywhere you shoot.