Training camp is a blast. I come down about every other year from Pa just to go to training camp. I actually like going to TC better than coming down for games because by late july I am starving to see the Fins in action and I can go everyday. I would definately recommend going to more than one practice because on any given day you could be stuck watching the most boring stuff imaginable while on others the opposite might be true.
I think it starts August 1st this year which is late as heck. They usually have two practices a day, they are always free to the public until the preseason games start and they go to private practices.
If you go, bring a hat or sun block. I am thinking about coming down this year but I am not sure I can financially which sucks cause this is the most excited I've been about the team in a long time.
Ironically I live in Bethlehem, Pa which is the home of the Eagles training camp but since I hate the Eagles that does me no good. I still go to a couple of their practices from time to time because they are an NFL team and its pretty cool, just ironic that I have to fly a 1000 miles to see my team when everyone else I know just has to cross town.