Shouldn't a bodyrub provider give some sort of signal that she's currently "draining the red sea" It's not FS but there are certain aspects of sensual massage that one comes to expect

"draining the red sea"...never heard it called that. Don't think I want to either.
All I expect or want is a hand job. So no worries here.

Some allow touch down there but just as many do not.  I probably would expect topless but I've had some that only opened a top to underwear.  
If a lady is having her period, she would probably stay more covered to prevent clients from expecting to touch there.  On the other hand, some providers 'might' use that as an excuse for not offering more.

I'm confused.

She just doesn't allow roaming south of the border.  Many of them don't.

Were a pad so when hands start roaming and you feel the pad you back off. Most Asian girls wear them . Hj or bj . Pants stay on in case of a r a i d ! Tops too minus a couple of buttons . And if your on the table with her pants down your goin down too. They get checked all the time !  

Consider articulating what you "expect" a body rub include.

That requires her to tell you?

If you want DATY or whatever, why not go FS? Or has FBSM morphed into daty and a bj for you after the rub down? The whole FBSM thing is much like GFE, each provider has her version and each hobbyist has his.

I thought if a guy wanted more he would just go FS and pick from that vast menu.

Massage , relaxing , feels good , hot girl , hj . Guys want more . Nice strip club , drinks , food , pretty girls ,  music , bullshit with the guys and or ladies there , guys want to fuck them !  Oh , yes I've picked up dancers but I'll let you in on a secret , the bartenders ( female ) are often knockouts , most do not dance , I've dated quite a few. Many guys just aren't satisfied and want it all. But then again sex sells in many places , borgata just won the right to fire women who gain weight , they were hired based on their looks and that's the way it goes ? Crazy right .

No-one seems to be satisfied anymore with what they get.

How did you discover she was being visited by Aunt Flow?

Not a massage girl but have been providing for several years and all I can say is grow up!  Women get periods---it's part of life and out of their control!!  MEN however (and I'm sure the ladies will agree) do not know how to wash their asses & balls!!  I've had men right of the shower STILL stink down there because they don't realize that a proper DRYING is just as important as a proper WASHING!  Periods are out of our control but swamp ass is totally in your control if you had a clue!!  C'mon guys clean it up because we don't want to be feeling disgusted every time we go down there!!  As for a bodyrub provider having her period, it's none of your business!!  You are there for a body rub so whatever is going on with HER kitty is none of YOUR business!
 

Very true!  Give them a generous yard and they want a mile!  This is why providers have to NOT be pushovers!  YOU are in control.  SOME guys have no respect & will try to have the upper hand you've got to laugh it off and don't put up with any crap.

Some things are common knowledge and playing stupid is a cop out.  

Its like the mad hatter when he asked Alice if she wanted some more tea as soon as she showed up to the party.  She said, how can I have "more" when I haven't had any tea yet.  His response was, Well, if you haven't had any, then it must mean "more" becuase it couldn't be any "less."