Tourists (non-Residents) Who entered the country after December 17th,2019, and until October 31st,2020, may legally Remain in Costa Rica until March 2nd, 2021. This is an automatic extension. Tourists Who enter the country from December 1st,2020 will need To depart the country Depending on the tourist days Granted at the port of entry.
For example, a US national who Enters on December 2nd, 2020, And is granted a 90 day stay Will need to depart by March 2nd,2021.