BigDaddy: Unless you intend to sit in the lobby for a couple of hours to see who is coming in and out I'd say it must sometimes be quite difficult to tell - the majority of SPs dress conservatively, remember: we have to get past the concierge/front desk.
Aurora: I'd have to disagree, unless of course you know the SP personally, a couple could be on a first date, getting lucky for the first time etc., simply flirting, or even business associates.
Ciao
Astra
