Usually, the masseuse will give you a little hint towards the end end of the session saying something like:  "Is there anything else you want?"

I recall going to one in Providence a number of years ago and asking myself if they did anything else, but they said no, just theraputic.  Oh well, it was a decent massage anyways.

Lately however, AMPS have been getting busted left and right, so they may be getting a little more cautious.

All I can suggest is that you move on to other places and see how you do.  There is a dearth of reporting on AMPS, especially now as many are closed and only a few new ones are opening up.

The protocol and cost involved is different in various parts of the country but, most often, if you want something "extra" you need to let them know by leaving the tip out in plain view. Whatever you pay at the front door gets you on the table with a mediocre massage. That's it. The amount of the tip will vary depending on where you are and what you want. I recommend reading the local boards on USA sex guide for accurate local info as I've never seen much on TER about these places.

Also, just because it says massage on the sigh and the girl is Asian does not mean that extras are available.  Often times this only comes with repeat business if at all. Also, within the same establishment some women do and some simply don't...

Good Luck! I'll stick to GFE's with reviews...