The Cardinals know you want tickets.  They know you want to see Opening Day.  They know you want to see the Cubs.  They know, also, that just about everyone is in the same boat when it comes to that.So, in light of that, they are giving you the chance to register to win the opportunity to buy Opening Day and Cubs Weekend Flex Packs.  From what I gather, it beats waiting in virtual waiting rooms on the web site.OPENING DAY AND CUBS FLEX PACKS REGISTRATION OPEN NOW! Registration Ends on February 16 for Both Packs ST. LOUIS (February 8, 2012) - As part of a continued effort to make tickets to the highest-demand Cardinals games available to fans in the most fair and efficient manner possible, the Cardinals are currently accepting registrations online at cardinals.com...