So, for those returning from the BVI to the USVI today, as an example, they will be asked for a passport at USVI C&I? Will they also be asked for their vaccine card? Or will they be asked just for a negative test? Within how many days?

With the portal removal, they also removed all guidance deferring to the CDC guidelines. I would think something needs to get published soon, or the incoming traveler process from sea passengers will be very chaotic, and SLOW!