It's about where the funds come from. Some folks want to have their federally funded lunch cake and eat it too. They want to accept federal dollars and still act like they're in church.
And who the heck are you tell them they can't worship God in Public when the Constitution Guarentees them that right?
They can't pray and have the prayer organized by the same entity recieving the federal dollars. If 'citizen elderly' wants to stand and lead a prayer even with federal funds I think he could do it. It just can't be organized by the group serving the federally funded meal.
Likewise, if citizen elderly is Buddhist, he may organize a Buddhist grace. But truth is, in Japanese and other asian american senior centers they are more tolerant of other faiths and don't say a Buddhist grace out of respect for their diverse attendants, including white christians.
This is just anecdotal evidence, take it or leave it. I worked with the elderly for many years as a social worker in a large metropolitan area and attended many communal elderly meals.