Usually I'd suggest already having a portable charger but since you don't I'd just get a Fuel Rod.
If you're having a hard time understanding how it works I'd suggest asking a Cast Member for assistance vs trying to come back on here to ask questions about it.
Its just much easier for someone to help you in person.
There are some USB ports you can use to charge your phone at the MK. The stumps at the Tangled restrooms are one, ask a Cast Member for additional locations. You may want to look into buying Fuel Rods for future trips, buy them from Amazon because they are much cheaper (you can buy 2 for the price of 1 at Disney), they should go on sale for Prime Days. Or just bite the bullet and buy one at Disney. There are swap stations all over the parks and resorts, you can actually find them listed on MDE. They are now the newer version that have more power and a USB C port. The rod will also come with a charging cable with multiple tips to fit most phones.
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