I myself have not left when I  have seen girls party mainly because it was not obvious when entering their place and they brought out their party favors later in the session.

There is no need to name providers but for those who have seen many, from top notch/traveling expensive girls to local girls advertising on the BP, CL, etc. and even the local paper, how many times have you seen them bust out the favors or pipe to smoke substances that clearly are not an herb?  

Analyzing my experiences, I would have to report that I have seen about 10 girls bust out the party.  Out of the 10, I'd comfortably say that 2 are vintage ts porn stars and the rest were local girls on CL or the BP.  

One time visiting San Fran, I met a girl on the street walking her dog.  I followed her hot body back to her apartment.  She took my money, some dude peeked inside her apt.  She then exchanged things with him and started smoking.  I sat there while she did that for about two minutes very uncomfortable.  She then opened an old pizza box, took a bite of a slice and fell backwards passing out.  I quickly left

The above was many years ago.....I am so lucky that I never had any problems and am no way going down these streets again.  While I enjoy TS fun, I am not interested in any type or risk