AMC Entertainment(AMC) andAMC’s Preferred Equity(APE) stock are rallying in anticipation of this weekend's National Cinema Day. It's the first #NationalCinemaDay and tickets will be discounted to just $3 apiece. For what is notoriously a slow weekend, investors hope this acts as a catalyst to drive customers into theaters -- and drive movie theater stocks higher. The stock market is going a bit haywire ahead of the long holiday weekend, but investors inAMC Entertainment(NYSE:AMC) have something to cheer about. The stock has turned higher on the day, led byAMC’s Preferred Equity(NYSE:APE) stock. At one point today, APE stock rallied more than 24%.That helped lift AMC stock out of the red, as shares were down more than 2.5% in early trading. However, the stock is now up by a similar amo