We're coming off a cruise in Boston at the end of September. From previous experience I suspect we'll get turfed off the ship pretty early, way before our 1910 departure on BA212. I note that the check-in desks open at 0545, but only for the AM flights, so earliest we could drop our bags off would be 1610. Is there somewhere at BOS we can store our luggage while we wander around for the day?