I don't really notice what other people are wearing and whether or not they are wearing something more than once, but for me, I don't want to wear the same tops because i don't want to have pics of me wearing the same thing. 🤪 I do try to pack carry on only and have succeeded when we did an 8 day trip to San Francisco, but I need a little more stuff for a cruise than I did for SF. We are also driving to the cruise port so there's no reason why I have to pack light. I have always been of the mindset, it's better to have it and not need it, than to need it and not have it.