Originally Posted by
adambrock
Call Admirals Club meeting services and request a gate pass at BOS for your day of travel. They'll book you on a 91xx flight and you can pick up the boarding pass from a kiosk or agent, which will allow you to get through security at terminal B.
+1 this is going to be your best bet, because you definitely won't get through security w/o a boarding pass for a flight departing Boston.