Agree that the service will be meaningful and know how to handle the sensory issues there. But am talking about after the service. My family typically does lunch with music, hora, chair raising, etc. Child wants party, but no music. He'll have some kids, but likely not an excessive number. So, really want someone to help me handle details for family gathering that will feel like a happy, safe celebration for him while also accommodating a family gathering.
Usually at parties, including his brother's celebration, he goes off and hides in a quiet corner somewhere.