My thoughts are the dead guy shouldn't get to decide how they're grieved cause you're dead and the people who feel like grieving together should just like...not do a whole ritual thing. But since the whole ritual thing is what would be decided for me if my parents outlive me, I need a contingency plan. I will make my funeral wishes absolutely impossible to tske seriously but also legally binding so it's either no funeral or the dumbest shit anyone has ever been to. So far I've got thar I want it held in a bouncy castle, and that representatives of as many religions as they can get to do their funeral stuff at the same time and to only play Bolt Thrower
secretly tell one person (not in your will) that you request a group of total strangers attend the funeral and tell made up stories to the whole crowd. these people are not allowed to attend any post-memorial service events and are not to contact any other attendants to the funeral.
Good call, and doable