Attention-seeking celebrities like Oprah Winfrey and Kim Kardashian caught water taxis in Venice Friday to watch Jeff Bezos, the world’s third-richest person, go through the motions of exchanging wedding vows with his equally attention-seeking bride,

The billionaire founder of the Blue Origin space company has worked to charm Donald Trump in recent months, and even invited the president to his lavish, star-studded wedding in Venice, White House officials told The Wall Street Journal. The president apparently isn’t planning to attend, due to scheduling conflicts.