I didn’t participate but I went to watch everyone compete and lend support to our academy. We had over 20 guys and gals participating, including kids. I believe we (Combat Athletix/Smiley’s MMA) came in 1st for gi and 2nd for no-gi overall. I might have that reversed. A lot of our white belts placed as well.
I have competed in Judo competitions but never BJJ. It just so happened that the first time I saw BJJ up close was during a Judo tournament. It was around 1998 and a guy performed a flying armbar on one of my teammates. It caused a near riot. Our guy was so upset and confused that it got everyone else upset and confused.
The one difference that I noticed was that the BJJ tournament was packed and everyone was right on top of the action. People were really into the matches as well. I could feel the energy and can understand how it could sap some of your strength if you are not used to it.
It was interesting to watch.