My wife and I are thinking about visiting training camp this year (probably between July 27th and 29th) and taking the kids with us, but we've never been before. If we do go, we'll be coming from Ohio, about 4 hours away. The schedule lists most dates to be "open to the public." My questions are: 1. Is there a cost to get in? 2. Is it so crowded that it's hard to get in? 3. If we do go, is there anything we should know ahead of time?