Yes. My absolute favorite restaurant in all of Crystal City/Pentagon City (and possibly of all Arlington County)--Kabob Palace--still requires it upon entry.
You are a Kabob Palace patron!?!?! That is a great establishment.
They know me on a first-name basis. They never once closed down during the pandemic.
#4 lamb kabob.
Salad
With 4 extra sauce.
That's a lotta sauce!
My tradition for the last decade has been to get a KP veggie platter immediately before going to the airport for extended overseas assignments for work and then stopping there again immediately after landing at DCA from such assignments. I miss those trips. Also used to work on Crystal Drive for a year or so back in the day and probably had KP once a week.
You ever had Courthouse Kabob, right across from Courthouse Metro stop? Right next to Ireland Four Courts. I used to go there all the time when I briefly worked in Clarendon. It's the only place that rivals Kabob Palace, IMO.