I think it is definitely worth going to the exhibit! I didn't have to go that far since I live in NJ, less than an hour away, but I think I wouldn't have been dissapointed if that weren't the case either. Of course meeting Robert Massie was definitely a plus for me, but beside that, there were many interesting things to see. I have been to the Alexander Palace (the real one) twice already, the first time in 1999, and the last time last summer. I actually noticed that some things that I saw there the first time were not there this year. For example the Marie Antoinette tapestry that hung in one of the sitting rooms. I was wondering about that when I was there, until I saw it at the exhibit! Apparently it is traveling. A few other things too, so going to this exhibit sort of supplemented my Russia trip...
Of course this is all relative. You can't compare going to the "real" AP to an exhibit, but still, this was a very worth while experience. Just the watercolors made by the girls alone were worth seeing! BTW, Olga's hussar uniform is at the Alexander Palace right now, I just saw it on my last visit and even took a picture

. So those of you who plan on going, I don't think you will be dissapointed.
Helen