What is the best reply for an invitation?

Start with a thank you: "Thank you so much for your invitation." Then state your answer clearly. For acceptance, write "We would love to attend" or "We are delighted to accept." For regret, write "We are so sorry we cannot attend" or "Unfortunately, we will not be able to join you." Keep it polite and brief.

If you are accepting, add useful details. Mention if you are bringing a named guest, any dietary requirements such as vegetarian or allergies, and if you need step-free access or a quiet space. The couple will appreciate knowing these things early. If you are declining, you can still send a warm note: "We are so sorry to miss your day and wish you every happiness."

Use the reply method the couple provided, whether that is a card, email, or online form. If you are unsure, ask them or their family. Do not just assume they know you are coming. A prompt, clear reply helps them plan seating, catering and stationery. Your reply is part of the kindness you show the couple.