yeah, I don't know if the problem is actually rally or if you just don't like the class that you are in. Other than learning the signs and what exactly is wanted in each exercise, I can't think of anything in Rally that isn't covered (or a variation of) a regular basic obedience class. In Novice, anyway.
Advanced involves sending the dog over jumps, which you might need a bit of help with the training.
I guess, to me, it sounds like the class itself is just moving too slowly for you? If the trainer isn't sit up for the other people to have a place to work on other things with their dogs, it would be very boring. You can try doing some focus work while you are waiting your turn - watch me, hand targets, etc For me, though, unless the person is WAY below me in skill level I can usually learn something from their run-through. Even if it's just what NOT to do.
However, if they were moving really slowly and there was a lot of time spent by the trainer showing them what to do or something, then it would be boring. Find an out of the way corner and work with your dog on something else. It all comes down to what you can get out of the class.
Especially pay attention to the dogs that are in a higher level than you. Practice some of the things that they are working on, a moving down, back up, side-step right, etc. Watch how the trainer wants them to perform the exercises and how they teach the dog. In our class, we have always mixed it up from the beginning. All of the dogs knew basic obedience when we started so, we used signs from all 3 levels. If the dog didn't know the basics (ie - sign was a moving down and the dog was just learning to down), then the owner performed the sign at their dog's skill level. If the course had jumps and your dog wasn't ready for that, just skip the exercise.
The point of this was that, when your dog titled in Novice you already had a head start on Advanced. Maybe my training group is a bit ADD but we prefer to not start over at the beginning with every title. A HUGE plus is that if you finish your title at the beginning of a weekend trial, you are prepared to move into the new class the next day. It always seems a waste of money when someone enters all 3 days of a show, gets the final leg of their Novice title the first afternoon, and then pulls the final 2 days because they don't know any of the Advanced exercises.