A '69' is where both the man and the woman give each other oral sex at the same time. The term '69' comes from the position where both people have their heads down in the others crotch, making them look like the number 69!
This provides mutual stimulation for both parties.
The most common 69 position is where the woman sits on top of the mans face, while she leans down and gives him oral.
Another popular position during a 69 is for both partners to lie on their side.
A 69 can be performed with or without the use of a condom but would obviously need to be discussed with the escort in advance of the VIP Escort booking.