I don't think I would really want to go see the Open at the Old Course...
you only have peripheric view, can't go behind green...
moving around the course must be tough... might as well watch it on TV
I was there with my wife and another couple in 2005, we had a ball. You sit in the bleachers a lot, but that's fun because you see play from both directions on both sides of the double greens. You can wander around quite a bit in the loop. We stood quite near the front left of #9 and watched 10 groups go through. We stood close to the gorse front right of #4 and saw some excitement.
There are quite a lot of patrons (
) who never leave the beer tents in the tented villlage with the huge screens.
Biggest problem in St Andrews was finding a spot for dinner, the town is overloaded.