Bridal gown should show detail, especially indoor shots. Payment schedule clearly defined. Delivery times specifically discussed and noted. Personalities of all photographer personnel who will be at the wedding should be compatible with the bride and groom. They will be in close contact all through the wedding day.
Photographer only does occasional work or is a beginner.
Poor selection of samples. Unmounted or dime-store albums. Sample photographs are of poor quality. What you see is What you get. Photographer' will relegate the 'job' to an 'associate'.