New reader here and I'd like to add that this was an awesome read covering in enough detail so a beginner might have a good chance of providing decent images.
While I'm no expert, here in the 'states' things can be a bit different. Weddings are held almost anywhere and sometimes with the wedding and reception at the same venue. Many churches have restrictions on photography. Everything from any photography is forbidden to the photographer has to stay in one spot to no flash photography is allowed.
There are a wide range of opinions/taste as to the use of flash and how much use is acceptable and how much movement the photographer ought to do during the ceremony. It is important to talk with the couple as to what they would like and talk to the official as to what is allowed or acceptable.
If flash is allowed one must remember that this is not a 'fashion shoot' and a constant stream of flashes may annoy the official, the couple and/or some of the guests. While some officials in some venues will require you to shoot from only one or more designated locations (if they allow you to shoot at all), its generally better to quietly and slowly work in a few different angles and perspectives and not block anyone's view of the ceremony (including the parents) for very long.
Coverage often times include the reception: bride and grooms arrival, family and friends reception line, the best mans toast with bride&grooms 1st drink, cutting of the cake, feeding each other the cake (or eating it), the 1st dance, bride dancing with dad, the tossing of the flowers and flicking of the garter belt. Some couples may open any gifts at the reception. Leaving the reception via a shower of bird seed and flower peddles to a awaiting car or limo to be whisked off to their honey moon. The car is usually decorated with "just married" and with cans on strings that make noise as they drive off.
Don't forget to factor in food/restroom breaks for yourself.