all your guesses are correct, which is not to say you won't have a good time, but it don't expect slow or gentle or unique or epic romance for that matter.  I think I might begin somewhere else.

I understand your concerns, which is why you really ought to go with a well reviewed provider who doesn't have upsells but known rates for various services. I know when you first get into this some rates seem high, but higher rates TER-level rates usually get you better experiences - not because they're higher but because the ladies are more reliable and, well, better. If it looks TGTBT it probably is.