I was getting my free soda for being a designated driver and I noticed that they were offering bottomless soda for $10 per game. Did anybody get this and if so, how does it work? Do you get a special cup or wristband or what? How big is the cup they actually refill? Given that the smallest sodas are $5 a piece, this could be a "bargain" on those hot days in Sept. (unless you realize that you can buy a 2 liter bottle at Giant for about $1.50, but good luck getting that into the stadium).