Two hours at a table changes the arithmetic. A restaurant that turns tables three times cannot exist here, so the covers available on a Saturday are fixed and the booking policy matters more than in any other format.
Uneaten food is a measurable cost. All-you-can-eat means guests order more than they finish, and tracking what comes back is what tells a restaurant whether the price per head still works.
The kitchen portions rather than cooks. Plates of raw ingredients weighed and arranged continuously through service is a different rhythm from a line, and staffing has to reflect it.
The equipment is at every seat. Induction units, extraction over each table and gas connections need servicing on a schedule, because a failed hob takes an entire table out of use on a Saturday night.