When in Rome, do as the Romans do.

That's the firm line Japan is taking with foreign tourists on guided tours, who will be allowed in from Friday. Such visitors will be required to abide by the nation’s coronavirus measures, including mask-wearing, and purchase private medical insurance in case they test positive for COVID-19 during the trip.

The Japan Tourism Agency on Tuesday unveiled guidelines setting out what travel agencies, escorting guides and tourists will be required to do before and during their trip.