The timeframe for booking wedding vendors can vary greatly depending on the type of service. As a general rule, booking as soon as you have your wedding date and venue confirmed is advisable. Typically, venues and popular vendors such as photographers, caterers, and planners are booked at least 12-18 months in advance, especially for weddings during peak season. More flexible services such as florists, cake designers, and stationery providers can usually be booked closer to the date, around 6-9 months in advance. Remember, the sooner you secure your vendors, the better your chances of getting your first choice.