You're right. This is a great location, but I feel some of these could use more DOF to take advantage of the surroundings. #2 is a perfect example of that. The shallower DOF in 7 and 8 works for those shots.
The only one I don't necessarily care for is the pose in #7. It looks like he's trying to leave and she's holding him back. Other than that, these are lovely.
Beautiful set! I love the setting, and the creativity. What a great idea - taking photos while they're still full of the glow of the ceremony, but past all the stress. I am betting these shots will be as precious to them as the actual wedding shots, and maybe even more so.