I attended a seven years-memorial of my mother-in-law on last Sunday. She died about six years ago. A priest came to the house of my brother-in-law. A priest recited a sutra during about ten minutes, and accepted some money. A priest in this town is very busy and rich.
When a Japanese died, a funeral is usually performed by the style of Buddhism. In this town some persons perform a funeral at their houses, because the cost of a funeral is cheaper than a hall for a funeral.
It is possible if their houses are wide, but if their houses are narrow, a funeral is usually performed at a hall for a funeral. A mortician (undertaker) has a hall for a funeral. A funeral at a hall is convenient, but the cost is more expensive.
Ordinary Japanese become a Buddhist only at a funeral, but we don't go to a temple in our daily life. Buddhism is necessary only for a funeral in Japan, and priests of Buddhism have the strong system of supporting members of Buddhist temples (so-called Danka system).
Anyway after a funeral, we should have several memorials. Key numbers are three and seven. The first is 49 days (7 times 7) after a funeral, and the next is three years later, and seven years later. I don't know after that. This is an annoying system.
What are your options? Other than choosing another religion or a non-traditional ceremony. It's not possible to change an established religious system.
I suppose it is the decision of the family members as to what religious or non-traditional method of observance they want,
It is important to talk about what a person wants to have happen to them when they die. I know it is a very difficult subject to breach but having a family member die and not know their wishes seems a much more difficult situation to be in.
I may be biased but I'm also partial to Jewish funeral rites: body goes into the ground 48-72 hours after death, family eats a big meal afterward and wears black for a week. Gets it all out of the way