Travellers who test negative for Covid-19 will be "guaranteed" a quarantine-free stay.
Children under the age of 12 will not be required to undergo testing; those aged 12 to 18 will be subject to the same rules as adults.
From 1 May, all travellers who can evidence having received the required doses of a recognised Covid-19 vaccine will not be required to undergo any testing to visit the country, as set out in early March.
Visitors will, however, be required to obey any regulations, measures or precautions in place at the time of their stay.