Philosopher David Braun (Buffalo) wrote me several days ago (while I was in Brazil, hence the delay in posting):

I am currently at the Pacific APA.  There was a serious problem with registration for the conference.  The registration desk was NOT open the night before sessions began (Tues night), and did not open till 8:30 am on Wed, which was one-half hour before the sessions began.  There was a long long line formed well before 8:30 am.  It included people who were supposed to give talks at 9:00 am, or comment on such talks, or chair such talks, or who wanted simply to hear such talks.

I think the APA should do one, or preferably both, of the following:  (1)  Open the registration desk the night before sessions begin.  (2) Print the room numbers for the sessions for the first morning in the printed program.

Sensible suggestions, which I imagine the APA will try to act on.