SEATING CHANGES: Southwest’s new assigned seating policy starts Tuesday, allowing travelers to pay extra to choose their seats, including those with more legroom, while other passengers will receive seat assignments at check-in. ��Plus-size passengers will also be required to buy a second ticket if they take up space in a neighboring seat. . . . #News12 #News12LI #Longisland #LILocal #LI #LongIslandNews #Southwest #Travel