While on redeye last night before or close to landing, entire crew came up to me in 4B, one at a time, and said thank you for being a MP member, today was my 25th anniversary in MP. I was like wow, didn't know it or even cross my mind. As I was leaving plane, pilot stopped me and thanked me as well. Was like cool, someone remembered some kind of date.

FA said it was on the manifest. All important FF milestones are flagged for every flight. MM, anniversary, etc.