I'm not sure why they walked out, exactly--it was an older couple and they seemed oddly upset by the movie. I don't know if they were confused by the time travel aspects, or if they simply thought that the movie was supposed to be about something else...

"I just wish I could pimp it enough so that so many people would want it that a good distributor would strike a new print for a disc and make a new master."
I wonder how many people that would take...