We have the 5s and weren't going to take chargers as we are hard phone users and haven't yet run out of battery over the course of the day. That said, if we were powering (no pun intended, but that's a good one!) through, we always leave when the crowds get crazy and park hop to our next destination later on so we'd have some time to recharge. I don't think the 5s and 5c are much different?