I wasn’t lecturing anyone, I was just asking questions. I was trying to get an understanding of why people need chargers with them, because I’ve never run into that problem, but, if there’s a chance that it could happen to me for any reason, then it might be in my best interests to bring a charger with me. No judgement intended.
You questioned people who need juice by making definitive statements like "a phone that is fully charged when you wake up should last until you go to sleep that night"
Pretty much the convention for phone capacity is roughly 1 day.. or less with heavy usage. In an environment like Disney where you are likely doing lots of photos, sharing, lots of browsing while waiting, heavy app usage, etc... for the entire day instead of just being 'out and about' for part of the day.. it's no stretch at all to consider most people's devices would struggle to last a full breakfast to evening fireworks day. You questioned people like 'what are you doing?' as if they were somehow being abnormal.
Even the latest huge iphone 11 phones when new can only sustain about 11hrs of continuous use with celluar data. That's a stress test, but done for consistency purposes. The real world includes network hopping, large data sharing, multiple apps, GPS usage, bluetooth, and more.
Maybe you're the type that doesn't run any background apps, or the type that locks down all the services on their phone except exactly what you want right then... but that's not the norm. And the norm is even in general use.. people typically have to charge overnight or during the day. And a Disney day is far from a normal day.. in both duration and usage patterns.