Work responsibilities kept me from volunteering this year, but in the past I was one of the staff helping to keep people off the armor. Most of it predates OSHA by a bunch of decades, has all sorts of unfriendly, sharp projections, gets crazy slick with the slightest precip, and is made of steel so any encounter with Newtonian physics ends poorly. Add to that the fact that a lot of the gear hung from some of the tanks are flat out collector's items that folks take a cavalier attitude towards and combine it with painstaking restorations . . . well suffice to say they are only one lawsuit away from an end of open houses and the investment in all that equipment is huge in both time and money.
With that said, look me up if I'm there next year and I'll see what I can get you into. My kids spent a lot of time in the BMPs. Better yet, come out and volunteer to help set up. Nothing like power washing armor, dropping car batteries down hatches to get those beasts started, troubleshooting any problems that arises, as well as all the less glamorous jobs to be had. I guarantee you after a day of working on armor you'll have a new appreciation of just how easy it is to earn contusions while wrangling it. It's where my kids learned about the joys of repacking wheel bearings and such so you can toss them into the fray too.