[just another ref]

A couple of observations:

1. As you mentioned, the pace is much quicker, so you must hustle to keep up. But other than that, I find varsity easier to call than anything at a lower level. In the first place the quality of play is higher, less silly mistakes, less whistles, a smoother, more enjoyable game for everyone. Also, the younger the players the more I find you must draw lines defining what you can and cannot call on a given night, rewriting the rules to fit the players, more or less.

2. The increased noise level you speak of I think of as a good thing. Best case scenario is a big crowd, evenly divided between the two teams. That way you get a big negative reaction from one side on EVERY call you make, which makes you less likely to second guess yourself. (I can't be wrong every time, can I?)