Im assuming you are referring to what is called French Kissing on the ladies profile.
As has been said on here many times just because something is advertised does not mean you will automatically receive it. It is ultimately down to the ladies discretion whether or not she offers certain services, her safety and hygiene are of the up most importance to her and these may depend whether or not you receive a particular service or not.
For many ladies the idea of French kissing crosses a personal line for them which enters an area of private intimacy for them and they are just not comfortable doing it with a total stranger.
I have found that where FK may not be on the cards at the first meeting it may be for later encounters as the lady gets to know you and feels more comfortable around you. Its also a good sign when you see mouthwash when you are taking a shower - if its there then use it - it will greatly enhance your chances of receiving some FK.