I just traveled abroad to Colombia for a wedding. To enter Colombia there are ZERO restrictions regarding PCR tests, vaccines, etc. People there wear masks pretty much everywhere but don't look at you sideways if you don't wear one.

The return to the states was different. If you're a US citizen and are unvaxxed then you need a negative test with 24 hours of departure (if you're vaxxed it's 72 hours). The wedding party arranged for a lab to come to the hotel and administer the tests. Since most guests were vaxxed they made these arrangements for Saturday but we weren't leaving until Monday. The lab guy told my wife not worry, stating that the Saturday test would be fine for me. When she later found out the Saturday test wouldn't be good enough for me she angrily contacted the lab saying we wasted money getting a worthless test. If you guessed that they sent someone out to administer a new test on Sunday, you'd be WRONG. They just sent a new test result with Sunday's date. It's all theater.