The ritual of marriage is one of the few spiritual and culture traditions still almost universally practiced in contemporary Australia. Documenting the process is now regarded as essential. The photographs are witness, memory and affirmation.
There is no second chance when choosing a photographer so make sure you get on well. Asking them to do something they usually don't won't serve you or them. Consider how the pictures will age, flashy stylisation thats currently in vogue may date faster then a simple approach. Good luck!