I’ve been to festivals for the past five years and every time I’ve taken lots of photos and even some videos. Especially last year, equipped with the iPhone, I was able to create 1080p video. I have to admit that shooting photos or recording videos takes away part of the experience but, for me at least, it has a big value in retrospect. From all those data I created videos for each of the last three visits to the festival and added some music to it. If available I also chose music of the band that is on the respective photo. Those videos are like a documentary on the whole festival, from getting there, setting up the tent, wandering around, seeing funny things and the actual concerts. I love watching them from time to time and think back at the great time I had. Just last year my sister recorded a “I died for you” from Iced Earth and I used the music from the Alive in Athens live album in the video and it matches so perfectly you could almost think it being the sound of the video (until you realize it’s not Matt Barlow on the stage). Still, a great memory!
I think, as also mentioned in the linked article, that you should be wary of how much you see through your camera and how much you experience by really watching. For me it’s about being there and living it, but also use all that photos and videos as vivid memory to build up a pleasent anticipation for the next gig.
And frankly, who would not want to remember that? (I picked the more catchy ones ;-] )