Child is 4 instead of 5 for ship excursion to dolphins

[Keetje]

We're going on a Carnival cruise in July to Cozumel and I want my children to swim with the dolphins. I wanted to book that directly with Dolphin Discovery because they allow my 4 year old to have the Dolphin Encounter. If I book through the ship it says 5 years old. My problem is now that I will loose $500 if the weather is bad. Dolphin D. will give you a gift certificate but I am going to live at the other side of the world and will not be cruising at least for the next 5 years. With 3 children it wil costs us $$$$! Has anyone ever took his child on an excursion while the child was maybe a year younger then what the Cruise line shore excursion said? I know that they can check the papers but maybe they will allow it anyway? Everybody who sees her thinks she is 5 already. It is the same encounter only there's one year difference!

I hope that somebody can help me out here!

[Keetje]

Sorry, I made a mistake. This the Grand Cayman board and I was talking about Cozumel, but it doesn't really matter because Dolphin Discovery is on CG and Cozumel.