We had a Silent Dinner as the "final" for our ASL 3 class. The teacher did this for a couple of reasons. One, so we had an understanding how even some typical events were different for Deaf people. Two, so we could use the ASL we learned in a real world setting.
I must say, our Silent Dinner showed us quite clearly all the areas where our ASL was lacking. There was simply a LOT of vocabularly we still hadn't learned.
Over all it was a fantastic event and the other students were great and followed the "no voice" rule closely.