Unfortunately, I can't read the whole review; only the comments Even so, there is NOTHING wrong with walking out of a place if you don't think you are going to be satisfied. That even includes the first few minutes of the session if you get bad vibes/hints of bad service from the girl. Or if she asks for her tip up front. Or if you feel the MMS foisted someone one you. Or the old bait and switch happens. There may be other, valid, reasons too. However, past 5 minutes into a session, I would tend to agree that walking out is cruel unless something exceptional happens. Also, after you hand over the house fee, you are pretty much committed and unlikely to get that $$ returned without a scene.
Let's not forget that the girl is the provider and You are the customer. You are the one exchanging your hard earned $$ for a high-end, intimate service, so it is of paramount importance that the customer be comfortable. Many can only afford 1-2 AMP visits per month or even less frequently; in those cases, a bad visit is especially disappointing. There are times I probably should have walked out and didn't. Almost always regretted that.