Cremated both parents. My perspective and things to consider:
1. Federal and state regulations regarding the "disposal" of cremated human remains. It is illegal to dispose of human remains, either cremated or not, in U.S. territorial waters without a permit.
2. Cremated human remains are NOT a fine powder, like talcum or cocaine. Much more granular and coarse, like concrete mix. And once exposed to air for a length of time, become rock hard and solid. Given that a crematorium is operated at between 1400 - 1800 degrees, those remains, while particulate, are sterile.
3. My brother and I and our kids all live in Florida. Both my parents' ashes are in California (somewhere in SF Bay, see #1). There was no hesitation to "inter" their ashes in California - my mom died in California, my dad in Florida. Our only discussion was do we bury mom on the back hill so she can see the view of the bay she so dearly loved (knowing we were selling our parents house), do we scatter her ashes on the property she so loved and cultivated (and the deer would eat) or spread her ashes somewhere else. Well, somewhere else won. And when my dad died 4 years later, he joined my mom in SF Bay. 10 years later, I have no problem with both my parents remains being 3,000 miles away somewhere in the Pacific Ocean, because that's what THEY wanted.
As much as I love Disney, I don't want my ashes buried there. And Disney wouldn't want that either.