It may be the best semi-secret wedding money can buy.

Next week, Jeff Bezos, the founder of Amazon and one of the world’s richest men, is set to marry Lauren Sánchez, a former TV reporter. Their ceremony promises to be among the most closely watched, and closely held, in recent memory.

Beyond its general locale — Venice, where some locals are already upset about the event — little is known about the couple’s impending nuptials, following what has been about six years of public courtship.

It’s a period that includes Mr. Bezos’ evolution from being known as the owner of the Washington Post, one of the nation’s most prominent newspapers, to being known as a friend of a president notorious for his attacks on the press.

At the same time, Ms. Sánchez has transitioned from being a news anchor in Los Angeles and a notable figure in the social scene to becoming a celebrity in her own right — taking short spaceflights with Katy Perry aboard a rocket bankrolled by her fiancé and having a bachelorette party attended by the Kardashians.

Mr. Bezos, 61, proposed to Ms. Sánchez, 55, on his yacht, Koru, docked near the Cannes Film Festival in May 2023, according to an interview in Vogue, hiding the pink diamond ring under her pillow. “When Jeff opened the box,” Ms. Sánchez recalled. “I think I blacked out a bit.”

Yet, for all of that publicity, the actual wedding plans have remained exceedingly secret, with security concerns and possible protests, though rumors abound about the guest list, the locale, and — naturally — the prenuptial agreement. Here’s what we know.