NC first time question

A groups friends and me went to K Lounge with MM for first time.......  it was for a birthday..........

Six brothers total and got 6 MMs to site with us......  $500 for 2hours....    take out $1500

All from China but very nice and big ball.........   

That night we all first timer so not sure what to do....  all MM just sit and
talk with us for 2 hours maybe not much maybe hold hands etc....

Some wear very little and show off big big ball others very tight.....

At these K lounge usually what can do with MM other than talk ?  can touch or not.... all have very nice ball ....  but because we new not sure what to do........

Can expert bros please tell me what usually allowed and not allowed at these K lounge about touching MM's.........