With the jewel in its crown now revamped, masterminded by the interior designer Yves de Marseille and the landscape gardener Peter Wirtz, Moët plans to host up to 2,000 people a year in its three grand salons, a warren of wine cellars and 11 large bedroom suites. Each suite has a sweeping interior theme, including “America” and “Roaring Twenties.”

But not everyone is invited.

“You cannot pay to come and stay at Saran, that is not the point. You have to be asked,” said Stéphane Baschiera, the president and chief executive of Moët & Chandon.

To qualify for this quiet tap on the shoulder, you need to be identified as an “honored friend of the house” — in other words, a top spender (or at the very least someone with great potential).

Despite multiple requests, Moët would not say exactly how many cases of champagne one would have to buy, or how many dollars one would have to spend, to qualify, though the company did say that both private and corporate clients would be invited.