Mr Bezos, 61, is expected to arrive in the lagoon next week aboard his 417ft yacht the Koru. The largest sailing yacht in the world, it boasts three tall masts and cost $500 million (£372 million) to construct.
But that’s not all. The Koru will be accompanied by a support ship – an equally huge vessel called the Abeona.
It is equipped with a helicopter pad – a requirement that is de rigueur for Ms Sánchez, who is a qualified helicopter pilot. The vessel may help transport the 27 outfit changes that the bride will reportedly go through, with gowns designed by the likes of Oscar de la Renta and Dolce & Gabbana.
The wedding is likely to cost around $16 million (£11,889,016), according to one detailed breakdown. The sum includes up to $1 million (£743,000) for flowers and the decoration of the various venues, up to $3 million (£2,229,190) for wedding planners, $2 million (£1,486,127) for the hire of the venues, $1 million for the catering and $1.5 million (£1,114,595) for the bride’s dresses.
There will also be mooring fees for Mr Bezos’s superyachts and the cost of providing lavish gifts for the guests, who include Hollywood celebrities and members of the Trump clan.
Luxury hotel suites will make up around $2 million of the overall cost, according to Manuela Pivato, the founder of an online publication called MyFairVenice.
Last week, activists climbed to the top of the bell tower on the island, let off coloured smoke bombs and unfurled a giant banner with a large red cross scrawled across the word “Bezos”. They hung a similar banner from the Rialto Bridge. The protesters were from an umbrella group called No Space for Bezos, a slogan that plays on the billionaire’s ownership of Blue Origin, the space rocket venture.
In a statement, campaigners said: “Venice is not for sale, it is not for rent, it should not be the backdrop for the wedding of one of the world’s richest men. “As Venetians, we are ready to defend the dignity of our city. Those who expect Venice to be docile and subservient, happy to gather the crumbs that fall from the king’s table, will be disappointed. What we did today is just a taste of what is to come.”
Tommaso Cacciari, an activist from No Space for Bezos, said: “To block their arrival peacefully, we will jump into the canals that surround the venue, and we will also block the alleyways that lead to it.
“Bezos is not just any VIP – he is a multi-billionaire who supports the world view of Trump.”