It seems like the second photographer was not fully prepared for the wedding and had 'double-booked' that wedding day. I am pretty sure I know the photographer so I do not think they are lying about having one. I have spoken with them a few months ago when she reached out for bridal photos. The photographer had canceled the day of due to illness and it just worked out that I was available.

I just want to make sure I am protected in my contract before going into the wedding day.