A second of 4k60 video is ~7MB, but we'll overestimate to 8MB (though I'm using really rough metrics here). At 690GB (230 x 3), that's ~86,000 seconds. Or, more familiarly, about 24 hours of 4k60 video (holy cannoli, Batman!). I guess that's about an hour's worth of video recording every day over a three-week period. Understandable, and more doable, though still really excessive.
And when you turn it into a more realistic scenario (~1 hour video/day - something I'd almost never do with my iPhone but often do with my Pixel), it's hard to imagine not having access to WiFi throughout the week. Even the hotels/apartments with really poor connection seem to have no trouble uploading the photos/videos throughout the night.
