A cautionary tale with this one.
The couple hired a pair of photographers and paid 100% upfront. Sure, they turned up on the day but Michelle & Dustin never did get any photos...and never heard from the photographers again.
I was only there as a guest, so just took my - now replaced - old Nikon with one standard lens. I was just happy that I managed to squeeze in to get a few shots for them to remember the day.
Lesson: Find a reliable professional with a reputation to protect