Backup photo locations
Always have a plan B
It seems to be sunny all week and yet it starts raining exactly when you want to take the photos. What now?
If you haven't prepared anything at that point, you still need to arrange a venue at that point. The wedding photographer will try to help with that but the choices are often minimal.
It is most convenient to have too many photo locations for the wedding shoot so that on the day itself you can decide what best suits each weather. So plan at least one indoor location in case it rains. Think: a museum, greenhouse, theatre, factory, farm, ship, restaurant, Ikea, swimming pool, mill etc.