I am a newbie..so obviously I don't have any references. I will be in Vegas the last week of June and am searching for a provider that accepts newbies and has an incall location. Any providers you know of? Thanks.

Why don't you try the ranches first? Sure it is an hour away from LV, but...

1) No references required
2) You won't worry about getting busted by LE (you are going to be nervous enough anyway)
3) By law, the ladies are tested for STD's weekly

Call Bruce at Pretty Maids, a few days before your trip.  As he told me, "if you are who you say you are, there'll be no problem."