Are the meeting dates fixed?
YES! They are completely fixed. Please see the schedule section.
I apologize that we changed the dates after my announcement at the Morgantown meeting because of the place change for the clinical session.
Should we fly to Narita or Haneda?
Haneda is closer to the hotel than Narita.
I prefer Haneda because of easier access but I do not stick to Haneda. Usually, I decide the airport depends on my destination. I like to take a direct flight because it is easier and less trouble (no lost baggage!). If there are two choices, one transfer from Haneda or direct flight from Narita, I would take a direct flight from Narita.
There is not much really big difference. I recommend you to take an easier flight.