I bumped into a couple former coworkers, IT Guys in a pretty big engineering firm - 1500 people, with offices from PA down the East Coast then west to some hotspots in AL, TX, and OH (at least...) - so they work with people in all of the offices and often made site visits.

They noted that, while there were only a few people back in the Philly and Cockeysville, MD (just north of Baltimore) offices - and some of them still mask - the Houston and Tampa offices pretty much never stopped coming to the office.