Due to the rapidly changing rules regarding Covid-19  it's essential we keep ourselves updated when it comes to the entry requirements in each country we plan on visiting, even in a post-pandemic world it's important to stay educated on visa requirements etc. 

Best is to use each countries own government website for the most accurate and up to date information.

https://www.visitcostarica.com/en/costa-rica/planning-your-trip/entry-requirements