Hi Paul.
Good subjects, just a few points? The wedding shot: Might be have been better to move the group slightly to the right, to improve the composition and avoid the notorious tree growing out of head! I don't suppose you had much choice though, if it was set up by the pro. Drinking buddies: Tight shots, but as others have said, slightly out of focus. You both look happy, and you're obviously not self conscious in front of the camera. A surprising number of photographers are. The bench: Yip, like it. The musicians: Possibly my favourite. I'd try to straighten the shot to correct the verticals, and crop to get rid of the railings and empty space on the right. The Alley: Not sure if I'd shoot it head on, but move to the right sufficiently to open it up and prevent the wall from obstructing the main focus?