Hi there,
We did BMG in Feb in FL, and it was wonderful. We have 9 & 7 yr old girls, and they loved it as well. The venue is not big, which is good in this case. Smaller venue makes the show that much better. We bought our tickets right from the box office, but called ahead with a CC to do will call. It was around $220 US for 2 adults, 2 children. It was worth it though. The show is 2 hours without a break. I also wouldn't sit in the poncho section. We sat at the back, where the walkway was in between rows, and it was great cause it didnt feel crowded. Have fun!