Yea I find that not getting enough sleep realy affects dreaming and as a result, lucid dreams. I just got out of finals, and for the whole time I was exhausted, and not to,mention the stress, so my lucid dreaming and recall also took a hit durring that time. It is funny about the camping part that you mentioned. Whenever I go camping, my dream recall goes way up, and I usually get a spontaneous lucid. I think it's due to just getting away from everything and not having technology around.