Star Wars: The Force Awakens Comic Con Trailer Breakdown – 46 Things You Need To See

Another practical shot that peels away some of the magic, showing an actress inside a droid costume - it looks suspiciously like a Power Droid or Gonk as they're affectionately known. 

Despite the conditions, it goes to show how committed the production team are to the small details that they're using practical costumes to populate the background of what looks to be a busy market scene. How easy it would have been to simply fill in with CGI only characters (particularly with a droid like this).

But that would compromise on the magic of even these little characters: the fact that they appear to have humanoid legs is part of the fun of their appeal, and there's no substitute for those legs actually belonging to a human.