the terms and conditions here say https://www.azamara.co.uk/booked-guests/onboard-packages/experience-more-packages
Chef’s Table: The Chef’s Table is for two guests sailing in the same Offer Cruise stateroom
as far as I am aware, the earliest boarding time offered is 2pm, the earliest I have seen someone report to get onboard is 1:45pm, think this is still related to time required for deep clean between cruises