I must have shot about 20 weddings, all for friends and family, all with FP4 and a Nikon FM. Most post digital era. I've then presented a small album of carefully selected shots as a wedding present, and have often had repeated requests for extra copies.
My tips:
1) B&W is a must - it makes everyone except the bride blend - men normally wear dark suits, but the women can be in a multitude of floribundia! It's also timeless.
2) Use fast prime lenses and NO FLASH unless it is very sunny and you need to fill in faces - my preferred lens is a 24 mm f2.8 for candid scene setting shots outside and something like 50 or 135 for head shots and close ups a second camera makes all the difference.
3) Don't get in the way and don't order people around. You are there to capture atmosphere not make it!
4) Learn how to bracket
I had a stock list of shots that I have taken at each wedding -here's a few...
Looking down the aisle at assembled congregation before the bride arrives
Entrance of the bride. normally from the rear and looking over the shoulder
Shot during the service - of course you know how to turn the sound and flash off?
Low shot up the aisle as the wedding party leave (it's a 24mm lens so depth of field is always excellent)
Assorted collection outside, just be sure to try and get photos of everyone - people are always in a good mood and form groups, just capture them. A list of the key players is helpful so you can be sure you have snapped them.
Shot of the rear of the wedding dress, preferably with sunlight pouring through it
Close up of the bouquet
Close up of the happy couple - take lots, especially candid ones, and an over the shoulder shot. Fast lens will blur the background
Couple in the car sometimes through the rear window.
Assembled children doing their own thing - very popular
Couple relaxing.
In general, pictures at the reception have not been as successful, although I have used colour in the evening to provide theme separation.
And nobody looks good eating!
