It can be done at MCO
Ok, to complete this thread that I started.
I'm on my second leg in/out of MCO.
This time I went to the Delta ticketing counter (Medallion line) and requested a Gate Pass to the Delta concourse to access the CRC from the TA. This TA had to make a call to the CRC to verify President's club members could enter. And also had to query the lead TA for permission.
And they issued the Gate Pass - not really any issues other than waiting the line time (at least they pointed me to the Medallion line and not the the mile-long coach checkin).
So if your traveling to/from MCO with President's Club membership it can be done!
But remember the long lines at the Security checkpoint when coming back to gates 1-59 (Yuk!).
And my EUA cleared to EWR at 2 days (Gold) - Must be my day.^