I'll be arriving from the UK on late Wednesday evening too. I'd like to know details of the meetup before I board my plane
The majority seem to be in favour of a Thursday evening meet up. Let's take Steve's suggestion and set the meetup place at Caesar's Palace, for 6:30pm and onwards.
If anyone has any other suggestions, shoot. Otherwise,
Caesar's Palace on Thursday at 6:30pm and onwards is cool. Whoever arrives first has the creative mission of identifying themselves as part of the meetup to let others know.

(I don't know how large the place is.)
@Matt: I'll be exploring Vegas all day on Thursday, if you're cool with it, let's meet up at the above place at 12:00 for lunch - anyone else around on Thursday is welcome to join us!
@Steve: Any suggestions for a great salad/fruit buffet bar?
Very excited!