Beer Can Chicken w/o beer canI prepare a lot of beer can chicken, and I also experiment a lot, so trust me when I tell you that just about any liquid used in the beer can chicken set up will provide satisfactory results, and some are heavenly.
I have used sodas like root beer, 7-Up, colas. and orange juice(very tasty), Jumex brand mango juice. I always add some of my rub to the liquid, and the results have always been very good. I usually use a piece of apple to plug the neck hole, but potato also works nicely, too. I like the tequila suggestion, and have used wine on occasion, with a raspberry merlot being my favorite. I have a friend who says she is allergic to alcohol, so I once set up a non-alcohol chicken just for her. She ate the beer can chicken with no harmful effects, so showing that the cooking process boils off the more volatile alcohol. Bon appetit!