I thought I give a little update. I did consider all your ideas (thank you !).
I used the buy one candy - get one free for the last 2 weeks of the year. Did wonders for my per cap.
I tried to set up something with some shops across the street , but they all were closed today.
Anyway, I ended up doing free popcorn, door prizes (T-shirts I had left over from promotions during the year and gift cards), as well as a movie poster raffle with proceeds going to charity. I promoted this via my website, facebook and an upgraded ad in the local newspaper.
Even though the numbers shrunk rapidly during the day we had an awesome day in total. About twice of what I would consider a good saturday.
Jay
P.S. Showing "Did you about the morgans?" and "Alvin & the Chipmunks". Both first weekend.