In my ever so humble opinion:
The focus of a wedding though predominantly of the bride, as others have mentioned, also involves the groom. I would alternate the focus and have the bride in the foreground of another shot to incorporate the focus on both of them. I have found before in wedding shoots that I go home to edit and have WAY too few groom shots. That is an area in my work that I am still addressing, but kudos for getting a solid groom shot here.
Great idea! I don't know if you found that on pinterest, but if you wouldn't mind, I might use that in a coming wedding. Others have mentioned cropping closer, but I like the feel of this shot. To each their own, but kudos again.
She looks a little frightened. Also, I would go into crop mode on this one. I have found it best to try and eliminate distractions and bored people, both of which are in this shot. The fellow with the camera on the left side immediately draws our view away from the couple, I think it's probably part of our sub-conscious that says, "hey there's a camera!, look and smile!, or turn away!". Also, I'm not sure the folks on the right side of the photo know they're at a PAR-TAY. It is probably best to crop them out as well.
Awesome. I would crop it in a touch, just enough to eliminate some of the unnecessary border around the flowers. As long as they are centered or purposefully not, and every thing is level, great.
Smushy! That's how some folks kiss now-a-day though so more power to them. I might crop a bit, dragging the top right corner down some, and bump the contrast a few notches, but that's about it.
All in all, great work! As for the 70-200 2.8ii, get it, rent it, what ever you need to do. I did not have it for our first two weddings, rented it for our third, used the heck out of it, and bought it to use for every wedding since. It weighs 1.5 tons so make sure to bring a monopod, but it is worth every single penny.
Benefits I've found with the 70-200 ii is image quality, focal length, and consistency. I shoot with a 5Dii and every time I throw "the beast" on, I know I'm about to get a 'money shot'. The images are spectacular, the 2.8 tends to be more than fast enough, and it consistently focuses as it should and quickly at that.
Hope all this helps,