I'm trying to set up my first outcall for next Friday in Vegas.  

Any words of advice?

My advice is to call only an independent who has favorable TER reviews....or a very established reputable agency(such as Mystique-see attached link). Do not even look at Craigs List and remember, bait, switch  and up sell is the name of the game in this business. So my friend, stick with the reputable sources of TER and established reputable agencies.And what you really need is GOOD LUCK.