Hi BLR.......
It sounds like you've gotten and taken some good starting advice on retouching/restoration.........
As I was reading your post, my first thought was 'be sure to download Neat Image' since it's really good for reducing noise and the stand alone version is free......
www.neatimage.com
The second thing that I noticed is that you convert your image to grayscale .... so, I was wondering, if you've ever used any other method for converting to 'black and white'....... like changing your image mode from RGB to Lab then selecting the Lightness Channel then going back to Image > Mode > Grayscale and, once again, Image > Mode > RGB...... (just in case you want to colorize it later)
I'm submitting a 'down and dirty' very fast (2 minutes) rendition of your last image and the only thing I did was:
Ran the image thru Neat Image and saved it....
Opened it up in Photoshop
Image > Mode > Grayscale
Image > Mode > Duotone and selected one of the brown duotones
Image > Mode > RGB
Which is another method of creating a 'black and white'...... you may already know these methods and some of the others such as using Channel Mixer to convert to Black and White........ what these other methods do is give you more depth and contrast, etc.... and, besides, it can just look better......
I'd say you're on your way to doing a great job and what a fun project.....wedding pictures!!!
oxoox
Beth
Oops...... I forgot that my last step was to add some noise back in to the picture so that it didn't look too smooth.....