Thanks for taking another look. It certainly is an interesting case! The entry conditional on whether it is a "cruise ship day" seem like it would be difficult to encode in the OSM tagging structure, but I guess it boils down to "whether you have a good reason to access the cruise terminal on a particular day" - so I'm thinking perhaps the route through the port along Sommerville Road should be `access=permissive`? And the Robert Street entrance I suppose should restrict motor vehicles to `private`.

Hello, thanks for your contributions.
I wanted to check in with you regarding this change as I have been checking access conditions for the White Bay Cruise Terminal. The terminal website recommends that public access to the cruise terminal (eg. for cruise passengers on days when ships depart) is via Sommerville Road and the ways that you have previously changed from access=permit to access=private. Furthermore, the website says that access via Robert Street is discouraged on such days. I am wondering if you agree with my findings and I'd appreciate your thoughts. Thanks!