After you get married or form a civil partnership, some countries may refuse you entry with an unamended passport, even if you carry your marriage or civil partnership certificate.
Therefore, it is usually best to change your passport in advance. You can check this with your travel agent or at the country's embassy, but it is usually best to change your passport in advance.
We can arrange this for you any time up to three months before the ceremony, although you'll be unable to use your passport until the actual day of your marriage or civil partnership.
Full details:
Further reference:
24-hour Passport Adviceline: 0300 222 0000 (see terms and conditions). Calls made to 0300 numbers from landlines and mobile phones are charged to customers at their network provider's national rate. Live operators are available to assist with your enquiry 24 hours a day.