QUOTE(RyanEstes @ July 16 2007, 05:43 AM)

I virtually never use a polarizer for weddings, but on vacation at Yellowstone and Glacier last summer, it was on my camera almost the whole time. If you want it for vacation, get it (I'd think in Cancun it would come in useful) but I wouldn't necessarily count on using it for event photography.
Ah....but you DO have one.

Even if you're mostly an event photographer I think you should still have one. We may not use every gadget in our camera bag on every shoot we do, but still have it anyway. IMO, a polarizing filter is a very basic need for a photographer....but I see more and more photographers (that started with digital) not having one or even knowing about it! Maybe it just seems like a basic need for those who started in film?