I am sorry for your loss.
My husband's son died some years ago, and his funeral was arranged by his widow and children. It was a mass and burial afterwards, that would have probably been different if his next of kin had still been his mother and father. My husband really would have preferred a cremation over burial, but would have never interfered. He does however lament every time he visits his son's grave, that where the cemetery is sited is directly under the Heathrow flight path, more as a wistful aside really than anything else. However, being and remaining close to his daughter in law respected her wishes, as they were at the time. The cemetery was pretty near where they lived and that was important to them, the children wanted that they often left letters, pictures in small plastic type bags on the grave.
to all those who have lost a child.