Hi Trudy.
Thank you for taking my comments the way they were intended.
I concur with Kathy on the blown highlights and clipped shadows, is just hard to expose for weddings.
I would also advise you as to your location choices the last picture is the best of the three you posted ( still has blown highlights), But the framing is not quiet there, and the lamp post is a huge distraction, also the aperture is way too small. Aperture is a very powerful tool for the photographer to create mood, both your pathway images could have benefited from a larger aperture to control DOF.
Timing is paramount for a successful image... you first path shot has a bush growing out of the groom's head. Also, I would have chosen a lower POV (say waist high)and a larger aperture for an intimate look.
I understand your friends still want you to take the pictures for their wedding, and is great that they are so generous.
If they were my friends, I would thank them for their support but I would insist on hiring a pro (choose carefully, there are lots of cowboys in the industry).
This request will have two purposes.
1- your friends will end up with professionally taken shots.
2- you will watch a pro at work (assuming is a real pro), giving you the opportunity to learn how is done.
As to why I concentrated on the groom .. I am a man .. I can't comment on what the bride may say