Locations for filming

I will film this weekend as I am attending London Film and Comic Con and it would be really interesting to use this location because it is an event that most Doctor Who fans attend. I think it will be great to use this opportunity, the only problem is I cant really plan for filming inside because I don't know what displays will be there, I only know a rough layout of the hall and the actors and actresses in attendance. This may make filming difficult because I cant control anyone but my talent in the shots and its more than likely going to be very crowded and loud. I think the best way to overcome this problem is not to have any speech through out the short film and use music and background noise as an alternative. I however can plan shots from the outside of the venue because its less crowded and I just think it would look quite a good shot as the venue is Earls court.
I can also use my house as a location

Below is the link to the event
.http://www.londonfilmandcomiccon.com/