When I was still escorting, one of the biggest challenges I (and a number of women who worked with me) faced was the assumption that Greek was ALWAYS on the menu. Clients had the mistaken idea that simply because you were an escort, all things were on the table.
Definitely not the case.
Just because you're paying for a person's time does not mean you're automatically entitled to whatever you want. Consent is still a thing.
With that said, I also had a friend who only offered Greek! She said anything else was too intimate for her.