So I'm a relative newbie...been doing it for a couple of months and loving it!!  I have a date with a lady that I will be seeing for the first time.  In one of her reviews the client said that she mentioned to him that Greek was on the table, but that was the only mention of it in any of her reviews.

I would like to know if that service is on the table and how much it will be but am hesitant to ask her.  Is it polite for me to ask or should I just bring extra cash and if it happens it happens??

It is possible the provider does not advertise it, nor does she want it mentioned. It is also possible the review could be exagerated or maybe the provider felt comfortable enough with the client/reviewer.

Best bet, ask the reviewer in question what he paid, if he did. If no response back, I would plan on bringing around a 100 dollars just in case. That's usually the going rate for top notch providers (300-500/hour price range) and what the fee is for Greek, or at least 50 if she is in the 200-300 price range.

That's my best advice to you

A lot of providers want to know in advance so they can plan their diet accordingly.

I'd say if it isn't explicitly offered in her ads to wait until your comfortably partaking in your session to ask if it is available. That may require a second visit, as some ladies prefer (I Know I would prefer they did) to prepare ahead of time. Not to mention, they may need to make sure you don't violate any "size restrictions."

Even if it is listed in her TER profile or reviews, the profiles are often inaccurate and the reviews are often, shall we say, embellished.

I don't think there's any way to determine if a trip to Greece is possible in advance.  Expect to pay extra...  this is about the only "extra" that does not constitute an up-sell.  Often a lady will want to see how big you are before offering it...  if at all.  She may alter her diet & do various cleansing that she might need to prepare...  so don't be disappointed if it's not possible on the first visit.  
skb