I also got the email! I'm so excited I probably have to contact Emerson to see when the specific date/time of my flight would be since I might have to find a return flight that will give me leeway to attend another college's reception on the 22nd...
I contacted Emerson and they told me the general outline of events for the Fly-in program.
On April 19th - arrival, intro, dinner
On April 20th -April Preview Event, tour of Boston, dinner, theater event
On April 21 - departure