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)
My friend just returned from a 7 day Disney trip with her family. On day 2 she lost her Rx glasses. They checked lost and found for the next 5 days with nothing. Yesterday she received a package from Disney with her glasses in it. Now that is the magic of Disney! How did they know they were the right pair? It amazes me.