Last night, nine of my friends and I took advantage of ClickLinksForFreeDrinks.com, the website that is giving away 10,000 hours of free hour-long open bars in NYC. I selected the Wednesday, 8 p.m. open bar at SideBar on E. 15th St. We arrived at 30 minutes before the open bar kicked off, and our hottie waitress, Sam checked us in. It was a very smooth process…