We have three regionals in Texas and I believe all of them are Atlanta qualifiers. Our team mentors about 20 teams (+/- 1 or 2), and we run the Lone Star FLL tournament. I think one or two of the teams we mentored made it into the final four but our approach to mentoring is different and so the kids do all of the stuff and we just point them in the right direction and teach them things here and there.
Also many parents have asked me about the next step in robotics for their kids and in our district BEST is the answer. I also told a few parents about VEX because they asked and I think that is a great Christmas present for a middle school kid or even a high school kid or an engineer.
EDIT:
Link to Largest FLL Tournament in the World thread.