On the day of the Celebrity Cruise, you can usually board early, usually between 10:30 and 11:00 AM, even if your scheduled time is later. The process can be sped up by using your Xpress Pass and finishing the Celebrity Cruise Online Check-In in advance. Guests staying in suites, concierge class, or The Retreat can board with priority. While some ports follow set times, many allow ear... https://www.cruisesfares.com/blogs/how-early-can-i-board-celebrity-cruise-ship