If you want a dinner first so that you can get to know each other better - then you're thinking
in terms of a date rather then a straight fuk ... I'm sorry to say your looking for girls in the wrong place.
141 walk up and hotel girls don't work that way - you will need to get to know them first before they are
willing to go out with you - (if they are willing to go out with you at all).
If you want some romance first before the actual conclusion then I think its better if you look for the
girls in LKF or wanchai bars - you'll be paying anyway, but at least you'll be able to warm up with them
before you hit the motels or where ever you want to do the deed - and in a motel it will be a lot more
comfortable then spending the night in a 141 walk up room.
Good luck and hope you find someone good for your first experience.