I’ve been to VAC and GFLV. Both bookers were easy to work with, although I’ve seen recent info on a local board that GFLV has become very strict on screening and is requiring a lot of personal information. I would strongly recommend doing the screening before you get here to make sure you’re not disappointed.  There are also KGirls at Little Tokyo and CLL, although I’ve never used those agencies. The CLL ladies are advertised on Foxy Lists. VAC, GFLV and LT have their own websites. All four agencies request similar donations. Most of the ladies at all of the agencies have multiple reviews here on TER.

is  made up almost entirely of touring girls.  There are a few that are based there, but even those tour to other cities when their regulars fail to keep them busy enough.  The average "stay" in Vegas for Kgirls is 22-24 days, so it might be a little early to predict who will be there a month from now.  Girls that are doing well may stay for another cycle.  Others who are slow won't.  The top agency is vegasasian (formerly the hobby shop), but there are others who are legit as well.  Do a TER search of Las Vegas for Asian escorts and you  will get an idea of which girls are there currently.  Check  again a week before you go and make a list of who you want to see.  

 
Vegas has a unique Kgirl scene in that they offer outcall service to major strip hotels for a $100 upcharge in addition to the standard AAMP incall arrangement.  Personally, I prefer incall because the girl will greet me wearing something really sexy rather than dressing conservatively to walk through the hotel lobby.  

 
One thing to be aware of is most girls who tour to Vegas from Norcal or SoCal use a different name in Vegas (although this is gradually changing as savvy Kgirls learn more about promoting their own brand), and often different photos than what they use in their home city.  Consequently, a few times I have ended up  seeing a girl I had already seen in California when I really wanted to see someone new.   When I ask a booker if a girl has worked under a different name somewhere else, the stock answer is that "they don't know."

I haven't been to Vegas since before I got into Kgirls, but I would check out LittleTokyoLV.... one of my favorites Blue is there now. Can't recommend her highly enough. Also per CDL the outcall to your hotel sounds amazing. The only drawback of the NOVA kgirls scene IMO. (well the other is that it isn't LA, lol)