Frankie, Marco here. Instead of a hotel pickup, as you described it, consider this game plan as an alternative. Have your independent provider of choice play the role of a hotel bar lady, and proceed with your fantasy from there.

Safer, a guaranteed happy ending ( : , maybe not quite as "adventurous" as what you are seeking, but just as gratifying in the end. PM me here at TER for specific recommendations if you wish. MfSD>>>>

....and much safer, too.  There are several great indies that cumm to mind as the right lady to fulfill the role at the bar, and I know Marco can point you in the right direction.
Gambling with whom to pick up safely can be even worse than gambling at the tables there.  HAVE FUN!

Vegas is an expensive town.  Lots of people coming in from out of town, with money burning a hole in their pocket and wanting to take advantage of the sin in the city's unofficial monkier keeps the prices high.

AMPs:  Not sure if you'll find anything at a price you're comfortable with.  The recent AIDS scare in the porn business may cause more covered services than BB (might hit the indies, escorts, and bar girls as well).

Bar girls:  If you treat it like a numbers game, you'll find the diamond in the rough.  You'll get a lot of rejections but you might get lucky and find someone that will accommodate you.  I'd be more worried about getting my dick (or my balls) bit off than getting busted.

Bob