We just did our 10th in Disney in May. We didn't take the kids, but these would work with kids too...
1. Put on all your PS's that it's your 10th...we got several free desserts.
2. Eat at the 50 PT Cafe at MGM. They make us Reinact our Wedding cake moment with a cupcake, a blast. The kids would love it.
3. Get bride and groom mickey and minnie hats.
4. I don't know if they still do this, they used to have a re-hitching ceremony at the garden grill. It was closed for renovations while I was there. It was during the Ice Cream social. Worth a call to find out. The ceremony was free.
5. Cirque de Soleil- we did this as a special treat for a special event. Not something we would usually do. My DH had always wanted to go and frugal old me had always said no so I got him tickets as a surprise.
I hope you have a great time!