FALL RIVER — Kara Lenz stood anxiously at the front of the line.The vestibule of Northeast Alternatives had gotten crowded as customers sought relief from the rain. Lenz, a St. Louis, Missouri, resident in town for a retirement party, was the closest to the main door, meaning she would be the first person to legally purchase recreational marijuana in Fall River when the dispensary opened at noon.Adding to the thrill was the fact that she had a flight to catch out of [...]