Just did that a couple of weeks ago. We got off Jet Blue, walked into the terminal, then went to Cape Air. At Cape Air they weigh everything, carry ons,pocketbooks, etc. They also ask you your weight. You then go through security into a wating room which has a soda machine & two bathrooms. When you go to get on the plane they take all your carry ons on put them in various compartments on the outside of the plane. If there is too much weight they hold luggage and send it later. Very small planes.