A year ago, in the same place, they declared their commitment before 120 guests.
On Oct. 21, the couple were married at the farm before 90 or so guests.
Before 10,000 to 12,000 guests, the president will give a speech.
A Scientology minister performed the evening ceremony, lighted with torches and candles, before more than 150 guests.
In the ceremony that followed, the couple vowed before 150 guests not only to stay together forever but "to repair one small piece of the broken world."
Hours before 85 guests were to arrive, the Greens called the whole thing off and told the guests not to come.
"She left that dear man standing at the front of the church before seven hundred guests who had flown in from all over the world."
The couple took their vows before 15 guests, while standing near a large oil painting depicting two lovers surrounded by birds, clouds and angels.
They were married on Nov. 29 before 90 guests in the 84th Street community garden.
Ms. Kennedy was to be married yesterday before 275 guests.