Overnight, the block for the Saturday you added

Overnight is a length, not a mood. Eight hours, a start written down and a finish written down, so that nobody is working it out at six in the morning. It carries one sum rather than an hourly count, set separately for four arrangements, and for two guests sharing one therapist that sum is exactly double what a single guest pays.

Why it belongs to the weekend rather than the week

An eight hour block ends when it ends, and a working morning does not care. On a Tuesday it is the wrong shape. On the Saturday a couple adds to the end of a trade week, with a Sunday flight in the afternoon and nothing before it, the block has room to finish properly. The page on the added weekend works through the arithmetic of that decision.

Eight hours is not eight hours of massage

This is the misreading that costs couples the most. The block holds sleep inside it, and a shower, and a conversation, and a stretch with the lamp off, and hands that come back later. Booked as an unbroken session it would be neither pleasant nor possible. Booked as a night, it lets the hours find their own shape.

Working backwards from the morning

Find whatever fixes the morning, a checkout or a train to the airport, and subtract eight hours. A block starting at eleven finishes at seven. One starting at midnight finishes at eight.

Half always goes ahead

Every eight hour block carries an advance half, with no exception for a returning client and none for a same day request. Half of the night's sum goes across once the night is agreed, the remainder at the door. Give the night up and the notice scale in the booking terms decides what stays.