I'm looking for a "ballroom dance camp" or similar program where I can spend 3-5 days studying different styles with a large group. I'm willing to travel anywhere in the US, but it would have to be during the month of August.

Does anyone have any ideas or suggestions?

There are a few dance camps out there, the two major camps are hosted by:
dancevision (mastery camps)

and

BYU ballroom dance camp (they have both an adult and youth camp)

Last year my girlfriend/dance partner attended the dancevision camp and the second week of the BYU camp. Both were enjoyable and a great experience, we've even made some friends from other parts of the U.S. that we still keep in contact with. After the camps and evaluating the cost I realized it would have been a much better spent if we would have paid for private lessons instead.