The Ben Dover position is essentially Standing Doggy-Style but with the receiver bending over at the waist. In a venue where lying down is undesirable, this is a great position to practice. It is advised that the receiver place their hands on the floor, or grabs their ankles, to balance themselves; this will allow for a more enjoyable experience, faster thrusting, and less likely-hood of falling over. Bending over pushes the pelvis back against the giver allowing easier and deeper penetration, but is otherwise less intimate than the regular Standing version.
For variation the receiver should try spreading their legs apart or bringing them together. However, the farther you spread your legs the deeper the giver is going to have to squat to gain access; say hello to burning quads. To overcome height differences, the giver should try squatting, or the receiver should be given something to stand on.