If it is the same as PBR in other states:
You can use whatever bat you want. You run a 60 (not laser timed) you get 5-6 ground balls and throw across the infield (or from the outfield). You get 5-6 swings off a tee and get Exit Velo recorded from a hand held or tripod mounted device behind a screen. You get a round of Batting Practice. And if you pitch you have your throwing velocity recorded.
Generally there are pretty long lines, and a lot of waiting around. Find ways to stay loose.