I would recommend the beast (aka Samsung NOTE) also.
Its 8.0 MP size is nothing to smirk at, it has a wider-than-average-lens.
It also shoots HD video (with dual mic) flawlessly.

Just put the phone on Airplane mode, and the settings to "Power Saver". Force close all background tasks, and the 2,500mAh battery will surely last you a long time. You can find aftermarket batteries than can give you an extra 30-60% more capacity if you choose.

And the best thing about that is, after you've taken the photos/videos, you can edit them right there ON THE PHONE. I've made a little (slideshow + video + pen annotation) presentation when I was at a function and displayed it with the microHDMI. Everything looked great in HD, on the fly.

Oh and the other best thing, after the wedding....this gagdet wont be tossed in a wardrobe somewhere (unlike camcorder/camera/PureView), its currently the best* smartphone and will serve you for a long time to come even after completing its objective.