[Dabhand16]

I agree with ecery word that Liam said. What you have not said is if you are supplementry to the official photographer, or are the official photographer. If you are, are you charging for your service? It will be worth taking out insurance to cover the event of total loss of the photos (and the loss of the happy couples' memories of the day) for any reason.

You also may have to use the flash for the outside shots if the light lets you down, so is your flash up to the job of lighting the group shots?

I'd make up a list of the 'standard' wedding shots that are pretty much expected, as well as any specifially requested by the couple.

If you are going to do informal shots at the reception and/or evening, make sure you balance up the relatives from both sides and don't end up with favourite Aunt Ethel not being featured somewhere.

Take an assistant who can hold the umberella for you.