I just went to WDW the end of Sept, I booked my airfare in June and bought EBCI when I booked my flight. In July I booked airfare for my granddaughter and her other grandmom for the same flight and added the EBCI. When I checked in we were all in the A group going to and from Florida, however, oddly enough my boarding # was not the lowest, my grand-daughter had A22 going down and her other grand mom and I were A 44 and A45. Coming home it was just about the same. I would have thought that mine would have been the lowest since I booked first, but this was not the case.