Covid Test upon Boarding

[cruise-a-holic]

I know that upon boarding Regent does a Covid test on all passengers. Any passenger that tests positive will be denied boarding. I understand that and agree with the policy. My question is if a passenger should test positive and be denied boarding when and how would their luggage (which I assumed has already been checked in at curbside) be returned. In our case a friend will be taking us to the port a little over 100 miles away and picking us up at the end of the cruise. 

[Pcardad]

The Purser is immediately notified while you undergo your 2nd test. Should you test positive on that as well, your luggage will be brought off the ship.