So long as what is on offer for each appointment time then fine, the grease girl profile doesn't actually list penetration in the likes list so theoretically it's not on offer for any time appointment though a report indicates it was.
There do seem to be quite a few profiles that state a 15 minute appointment is oral only so at least you know and can make a choice accordingly.
What annoys me is when the profile isn't clear, i've done an hour booking only to be told after 15 minutes when i've cum that it's 1 pop only, WTF!