What a great story! I'd have loved to have an out of doors ceremony. When you move, you should take several cuttings from the tree to plant seedlings wherever you end up. That way, you'll always have a bit of your Wedding Tree! Hope you know how to take cuttings from a tree, though--don't ask me how, I always kill my cuttings, don't know how to do it properly.

Or if it makes seeds that are easy to collect and germinate, you could harvest those instead. Just a thought!
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May The Hair On Your Toes Never Fall Out

--Traditional Hobbit Blessing