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)
Thanks in advance to my MW friends - 14 days... I just realized I need a fast food lunch place at Disney studios/aka MGM or Hollywood Studios - I looked at the menus but your advice is way better! Thanks!