I had no trouble in Vegas, maybe I was lucky.
Found a girl on TER priced reasonably. Texted her, agreed services, had a good punt. Nice girl.
Next girl, same but she didn't want to confirm services. Told her, no worries, I'll leave it - wasn't that bothered. She said, ok, confirmed, and again good punt. Very good.
No need for references or anything, was easier than punting back home in some ways.
Maybe Vegas is easier, or I just had beginner's luck.