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How do I sell a longer stay window with a chosen arrival time, without turning it into an appointment?

Sell a sauna or cold plunge stay as a timed session with a fixed session length, not a practitioner appointment.

ZettlorUpdated August 26, 2026

Zettlor sells shared-capacity sauna and cold plunge sessions where the guest picks a start time and the stay length is the session length. This is seat-based sauna and cold plunge access, not a one-to-one appointment with a practitioner.

What Zettlor does today

Shared-capacity sessions use discrete slots with a set session length. The guest selects a start time; their stay window is that session length. Capacity is seat-based, not a free-form arrival range.

This behavior is live in Zettlor today for a commercial sauna and cold plunge room. Guest booking, cancel, and credit self-serve steps stay on Help. This page is for operators.

Desk path

Scheduling → Configuration to set session length and release policy; Schedule to verify open slots on the schedule.

Do not invent a settings path beyond what is listed here. If the product does not include a control, the desk workaround is the path.

Failure mode

Operators stretch session length expecting guests to arrive anytime inside a window. Guests only see discrete starts; a 90-minute session is one arrival time, not a flexible range.

Operator example

Rytual runs 90-minute sauna and cold plunge sessions. Guests pick 10:00 or 10:30 start; the stay ends when the session length expires, with no practitioner appointment layer.

A sauna and cold plunge operator can copy the shape of this example without copying another brand's private pricing or customer lists.

How to do this

  1. Create or edit a shared-capacity sauna or cold plunge offering.
  2. In Scheduling → Configuration, set session length to the stay length you want sold.
  3. Set start interval or session start times so start times match your arrival cadence.
  4. Generate slots and confirm on Schedule that each row shows the expected session length.
  5. Publish and test checkout: guest picks one start time; checkout confirms that slot only.

Can guests arrive anytime during the window?

No. They book a specific start time. The window is the session length from that start, not a flexible arrival range.

Is this the same as a treatment appointment?

No. Shared-capacity sessions are seat-based sauna and cold plunge access. One-to-one practitioner offerings are separate appointments.

Follow-up guides

Book a demo or get started.

Follow-up guides

Zettlor is booking and operations software for commercial sauna, cold plunge, and wellness facilities. See how it works.