I'm a tall and large person, while i don't think that particular service would cater to me anyway, i once spent a day and a half running around hong kong to try to find a store that had anything remotely in the ballpark of my size. If you land in certain countries on a long holiday weekend, might also be difficult to find shops open. I'd go with 99% of situations : - P
True. If you have no taste or clue how to dress yourself then any old clothes should do just fine.
You mean when the alternative is not having any clothes at all? Or are you being intentionally obtuse?