One of my best friends has a wife from the UK. Her father was here. He died. He wanted to be buried (or his ashes interred) in his native land. Thus, to honor his wishes, they pack him up in a customs approved container with the appropriate paper work and labeling. At the airport, they check and are told it is ok at baggage check in. However, the bag is opened later and the container opened and loosely re-sealed. Leaving Gramps to fly to the UK in his daughter's underwear. Significant parts of him were consigned to the washing machine in the hotel.
I've heard this story before with other versions of throwing the relative into the waters until a wind blows him or her over the funeral party. Make it simple, folks. My parents had a plot in the family cemetery in NY. Family society. However, they moved to Florida and told me that when they die, cut the crap and cremate them No need to ship them back to NYC.
Another point about cremation and heating that was mentioned. In Portland, hey CF, when I was there a funeral home advertised its green nature by using the oven heat to warm the facility. Jokes were that if it was cold outside they had a stack of Grandmas to ...