We were originally on this cruise but took the "Bump" offer Regent offered us and switched to the Vancouver to Los Angeles cruise. I emailed Jennifer at KLT requesting a guest pass so we could come and visit on the day of embarkation (help our friends onboard unpack... haha).

I received an email with confirmation from Jennifer 3 days later.

I'm not sure just how it works. We've had friends and family come on board many times when we were the passengers. It always worked for us. Maybe you need to contact Jennifer. Email her : jennifer@ keenetravel.com
If approved, make sure your guests have photo ID etc.