The advanced Brazilian Jiu-Jitsu student (brown or black belt) is proficient in a wide variety of material, and serves as mentor for their teammates. A brown belt is awarded to students who display exceptional skills that are challenging to everyone. A brown belt knows what a black belt knows, the rest of the game toward obtaining a black belt is attaining proficiency and experience with the material.
It is common for students to practice 350-450 hours at the brown belt rank. The live sparring aspect of BJJ is important for advanced students as they refine strategy and anticipate attacks.
Don't get too wrapped up with time or grading your performance. Come ready to train, absorb the material, play and have fun - everything else will fall into place!
Learn more about the Brazilian Jiu-Jitsu ranking system.