Be sure to have enough juice to keep you phone running throughout the day! Most people are at the festival for over 12 hours a day! You'll never make it on one charge, especially if your phone is also your primary camera! I keep my charging cord in my pack to plug in at the Music City Center and I also keep charged spare batteries with me. If you don't have spare batteries for your phone or you are an iPhone user, external power packs are really useful! You can find some here!
See more CMA Fest Tips and Tricks here!