EARLY!!! REAL EARLY! 3 or 4 pm. Hell, maybe even sooner. I'm serious on this... A line will probably start early that day (depending on the weather) since you're not going to a reserved seating theater... Had a bad experience going to see EP III and apparently people had been there all day. Me and my dad walk in the theater 25 minutes before (it was our fault but yea) and we see people with Star Wars memoribilia in their seats so no one would take the seats. Lightsabers,books,and random **** you name it... We had to sit in the very first row. I was heated. To make matters worse, that particular theater had oversold tickets to the midnight release and quite a few people had to be given passes for another showing....