Mega yachts and private jets started arriving in Venice Tuesday for the big wedding bash Thursday through Saturday of Amazon boss Jeff Bezos and journalist and pilot Lauren Sanchez.

Fund manager and philanthropist Bill Miller's 60-metre, 70 million dollar yacht l'Arience and billionaire Shahid 'Shad' Khan's 122-metre yacht Kismet were among the first vessels to dock in the lagoon city where protests about Bezos's "buyout" of the priciest major central amenities have gathered pace recently.

The yacht belonging to Khan, who owns Premier League soccer club Fulham and NFL team Jackonsville Jaguars, is one of the few boats in the world with a cryotherapy room.

Officials at Marco Polo Airport were tight-lipped about who had arrived on the flock of private jets that have already landed there, given the high security and secrecy surrounding the year's toniest global nuptials.

But it is known that among the big names on the approximately 200-person guest list for the Bezos-Sanchez wedding are celebrities like Oprah Winfrey, Mick Jagger and Leonardo DiCaprio, as well as Katy Perry, who traveled to space alongside Sanchez on a Blue Origin flight in April, AP reported this week.