I am kind of late here. But Japanese Jujutsu is not about exposure at all. The biggest focus in "Traditional" Japanese Jujutsu is the passing of the Ryuha. It is all about keeping it alive. That's why it takes certain people to want to train in "Traditional" Japanese Jujutsu. The atmosphere and goal in mind is completely different than what you will find in like a BJJ school. As for how the training goes outside of Kata. Well you really don't know. Surprisingly against what most people think... Even some Bujinkan schools have free play Randori.