There’s the added issue of USB A vs. USB C charging ports. Which should be provided? We’ve moved off USB A as devices have been upgraded, but a lot of locations with charging ports installed (hotel rooms, cars, planes) are USB A. Having to carry multiple cables can be a hassle. We’ve purchased a portable power bank that we charge up and have available to recharge phones as needed in the parks. At home, my phone seldom drops below 50% over a full 24 hours, but connecting to the sporadic wifi in the WDW parks and resorts drains the battery much more quickly.