Just got done (unceremoniously) a week+ ride across PA. Never secured the bike while taking any one of my 7 showers. During my 9 nights sleeping outside I locked the bike 1 time. I stayed at a shelter along a trail near a populated town, and the trail had easy public access. Locked the bike once or twice while grocery shopping. One of those times was with all my gear attached. During the other grocery shopping trips I stashed the bike inside store vestibules. During C-store stops I just left it outside.
Nothing went missing.