Thanks GB. Was definitely a trip for the ages. There are some things we'd do differently, but honestly not much. Input from FFA + research (YouTube / Webpages / TripAdvisor / Reddit) had us pretty well prepared packing-wise, and we were very happy with our itinerary. Maybe one more day in Monteverde?
Part of me wishes we skipped Tamarindo and stayed in Samara, but it was good to experience Tamarindo... and when we booked, Samara still had no testing capacity.
It may differ in Mexico but for us:
1) Find testing location and contact them.
2) They send you to a national website to register for testing:
https://mipruebacovid.com/
3) Then you email them your info (Name, flight info, passport #, etc).
4) They email you a test time. You show up, get swabbed (5 mins).
5) They email your results... it's a PDF attached to the email that
looks like this
6) When we arrived at the airport the test was checked once by an airport employee to get in line, then by a Federal Police Officer.
He didn't scan the QR code but I've heard others did. He checked name, and ID# matched my passport. Wrote some info on the back of a sheet of paper, then sent me on to the check-in counter and bag drop.
I think you could photoshop a result easily assuming you knew what the mexican template was. The QR code simply refers to an online version of the form that looks exactly like the PDF, so you could host a JPG of the PDF anywhere and I presume it would come up okay as long as they didn't look at the URL.
Only problem is, if they scan and then notice the URL, you'd prob get denied boarding.