Just thought I would let people know, I myself today got caught in the trap of going to ST hotel to meet a website girl and they asked for passport, which I didn't have with me. Such a stupid mistake. They would not budge. Looked through my briefcase thinking I must have SOME I.D. on me but alas no. Tried to see if they'd be ok with my business card. Nope, sorry, must be I.D. SMS'd the girl to inform her, and she said she was not allowed to go to other hotel. Dead end. Go home.
May go back and try again tomorrow.