Just got back from PR yesterday. Had no problems at all. My license says not valid for federal identification and the TSA agents did not say anything. I do want to say that I saw ICE at the airport in San Juan right after tsa check. They were at a booth. So make sure you have your documents with you in case you get stopped. But you should be fine! Enjoy the beautiful beaches. I miss it already!
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Self filed AOS │Apps Received By USCIS - 05/30/19
Biometrics Done - 06/21/19 | Interview Scheduled - 1/31/20
Interview Date - 3/16/20 | AOS Approval - 3/17/20
Green Card Received - 3/23/20