My Mom always told me that life was for the living. A guy or girl is cold in the ground,and yet his mother/wife/children are alive and at the funeral.honestly I'd probably have a close friend of the family ask if there was an objection to having bikes there. If they knew it was a passion of the deceased, they'd understand want bikes there.
I think this is a great idea.probably ride... though I would take into account the family's wishes if they were a close friend (ie it would ruin the mother's memory of the event if folks rode) If that was the case, I'd hold a memorial ride/cook out to honor the person's memory that the family would be asked to attend