The executor of the will has the legal right to the body and to take care of the arrangements.
Depending
on the circumstances involved, but with community nurses, palliative
care support and carers, many people die in their own homes, surrounded
by the people they love.
Yes, it has to meet the size specifications to fit into the grave or the cremator. It also has to meet the standard set by the receiving establishment.
Cardboard coffins are in use in many countries. They are manufactured in this country to Australian Standards and are perfectly functional. There is no law to prevent you being cremated or buried in a cardboard coffin.
Each local government area should have a policy for burial on private ground. It is usually dictated by the size of the property. Contact your local authority and ask them about their policy.