Is your battery running out at the Park? We recommend this charger, it charge your phone 6-8 times (full charges), it is amazing http://amzn.to/vEV5VF (MW benefits if you purchase)
Here's a pic from our meet up at DCA. Psychguy came a little later and used his special tix to get all of us on Toy Story Mania without waiting in a long line. Gary was sick and couldn't make it. Andrea and Mike, it was great meeting you! Hope you enjoy the rest of your stay!