A round the world trip to reveal a surprise

How I love a great story.
Coming up to new year I took a call from a gentleman , him and his sister wanted to book a cruise as a surprise for their mum’s special birthday. They took family photos around the world in different places,Kuwait, Bahrain, Ethiopia, Qatar and here in the UK to send to their mother and then did a big reveal a few weeks ago. The result was fantastic and they couldn’t of wished for a better reaction. They shared the photos with me. They actually revealed it on a photo taken at new year but their mum didn’t twig.
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How would you reveal a surprise trip ?
How do you think your loved one would react ?
Could you keep it a secret ?