based on my very limited experience
1. if you're at SL the negotiation is very different than HDR. at SL saying "hi" and "lets go to my room" is about all it takes, I remember Bills Bday party, and we spent almost 2 hours partying with the girl and 2 hours in the room partying naked and asked "so what do we owe you for the wonderful party" ... $80 each ... priceless.
2. at HDR you need to get price, time, particulars of service and if that includes them being on the phone the entire time. never pay upfront!!!!
3. although i haven't taken the pops tour, i would recommend it. there's this guy named pops ... contact him for some great places to eat and recommendations of some ladies.
4. HLH just stay there and negotiations are all inclusive. it's like dying and going to porn heaven.
5. hey ydogi whats up dude!!!