Realistic Timeline
For a peak-season Saturday (June-September): venue and planner at 14-18 months out; photographer and videographer at 12-15 months; catering tasting at 6-9 months; floral design and music at 8-10 months; transport and accommodation blocks at 10-12 months.
Shoulder-season weddings (May, late September, October) can compress this by 2-3 months.