Outside of decent hotels I don't think I've seen anyone on the desk (or anywhere else in the hotel) who has a British accent for years.

"You guys" sounds like American so it's possible that it's someone like an Australian who learnt their English from Beverly Hills 90210

http://en.wiktionary.org/wiki/you_guys

As for passports, nope, doesn't ring a bell with me. Sounds like something someone in head office thought up to stop people running away with the sheets and towels in the middle of the nigth