Be-All is a very well run event with plenty of quality seminars. For the CD, it's a chance to get out, dress and socialize. For the TG, again it's great for hanging out, living in your other gender role and a chance to take in some interesting seminars. For those who are TS, many doctors and surgeons show up who also do consultations by appointment for free.
Back in 2002, I went to my first Be-All just for the day. This was long before I was living full time. I rented a room, and had a place to change. Although I didn't know anyone, I did find a lot of helpful people. At this point in my life, I was not on hormones, but knew that I was TG and questioning whether I was TS.
After attending some of the seminars, I was able to schedule a consult with one of the plastic surgeons. I also got a chance to meet the doctor who only months later would be prescribing me hormones.
Again, I think that Be-All is really a good event. Go onto their website, and check out all of the activities.
Good luck!