Twenty-one or over, asked at the threshold
Everyone booking, and everyone in the room when she arrives, has to be twenty-one or over, and a photographic document can be asked for at the door.
One age applies here and it is twenty-one. It covers whoever makes the booking and whoever else is in the room when she knocks, and it does not bend for a birthday falling later in the weekend or for a document left in a safe upstairs.
At the door
A photographic document can be asked for on the threshold. She reads it and hands it straight back in the same movement. Nothing is copied, nothing is photographed, no number is written down, and nothing about it survives the visit. It is a look, not a record.
When the question cannot be settled
Where who is in the room cannot be established at the door, she leaves before anything begins, and the fee for the reserved time stays payable. That is not a penalty invented for the occasion; it is the same rule that covers any session ended early. The age statement puts the whole position at greater length.
Why it sits at twenty-one
Every page of this site sits behind a declaration that the reader is twenty-one or over, and the roster, the figures and the service descriptions are all written on that footing. A guest arriving for two nights with a passport in his jacket has already done everything the rule asks of him. A guest planning to bring somebody along should read the terms first, since the age applies to every person present and not only to the one who wrote.