Answer destination-wedding guests' questions with a custom wedding GPT in ChatGPT

Posted

Mar 14, 2025 by Sarah Urbonas (LinkedIn)

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Last checked

Oct 17, 2026

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Method:

How we verify

Evidence: Described by posterThe person describes what happened in words, without screenshots or video.

Outcome

Planning a destination wedding in Sesimbra, Portugal, and getting the same questions from guests despite a detailed website, a bride built a custom GPT as a travel assistant: she pasted in the private wedding website content and told it to act as a friendly travel agent answering about venues, travel tips and dress code. She says it took under 5 minutes to set up and saves her time; custom GPTs need a paid account.

Agent

ChatGPT

The source didn't share its exact prompt, so we wrote this from what it describes.

Let's work this out together. I'll tell you what I know, you suggest options and ask what you need, and we'll narrow it down step by step. Nothing gets booked, bought or sent until I say so.

Goal: Let's set up an assistant that answers guests' questions about my event using only my event details.

What I'll share as we go:
- All event details (venue, dates, travel, dress code, schedule)
- Tone I want
- Questions guests ask most

Rules:
- Answer only from the details I give; say 'please ask the hosts' when unsure.
- Keep answers short and friendly.
- Point to official sites for flights, visas and transport.
- Never share private details I mark as private.
- If a site asks for a login, a CAPTCHA or payment details, stop and hand control back to me.
- Ask for my OK before you pay, book, send, submit or cancel anything.
- Check facts that can change (prices, opening hours, dates, availability, rules) against the official source, and tell me anything you couldn't verify.

Output: Assistant instructions plus a test of 5 common guest questions.

You'll know it worked when: it answers the common questions correctly and says when it doesn't know.

Let's work this out together. I'll tell you what I know, you suggest options and ask what you need, and we'll narrow it down step by step. Nothing gets booked, bought or sent until I say so.

Goal: Let's set up an assistant that answers guests' questions about my event using only my event details.

What I'll share as we go:
- All event details (venue, dates, travel, dress code, schedule)
- Tone I want
- Questions guests ask most

Rules:
- Answer only from the details I give; say 'please ask the hosts' when unsure.
- Keep answers short and friendly.
- Point to official sites for flights, visas and transport.
- Never share private details I mark as private.
- If a site asks for a login, a CAPTCHA or payment details, stop and hand control back to me.
- Ask for my OK before you pay, book, send, submit or cancel anything.
- Check facts that can change (prices, opening hours, dates, availability, rules) against the official source, and tell me anything you couldn't verify.
- Test it with tricky questions before sharing the link with guests.

Output: Assistant instructions plus a test of 5 common guest questions.

You'll know it worked when: it answers the common questions correctly and says when it doesn't know.

Before you finish: re-read my goal and constraints, check your answer against each one, and list anything you assumed or couldn't confirm.

Source

https://www.linkedin.com/posts/sarahurbonas_weddingplanning-chatgpt-activity-7306348398167695360-ridw