Firstly, guests will not be allowed to go ashore and explore independently, but only through pre-booked excursions. They will also have to go through universal health screening, which includes three stages: a temperature check, filling out a health questionnaire and finally, having a COVID-19 swab test.
Also, in case you were wondering, all crew members are subject to some rather drastic measures. These include: being tested twice for COVID-19, self-isolating for 14 days and then being tested for a third and final time, prior to embarkation. They will also be tested at least twice a month, in addition to ongoing health monitoring.