Thanks to Robert for submitting information on their Web site!
It’s a hidden link, but there is a “post office” at the Visitor Information Center on the first floor in the center of the baggage claim.
Robert sent a postcard indicating this is still there and the pickup time is Monday-Friday at 1:15pm. I’m guessing there is a collection box of some sort instead of an actual post office.
Last updated 22 November 2021