So I booked a reservation at LAS with Alamo using a mailer I got for triple credits -- there was just a corp ID, no coupon code required. I can't find anywhere to enter my Southwest # in advance. I can enter it in my profile as an alamo.com member -- I don't have Quicksilver. Of course, I forgot to login before I created the reservation.... is there a way to add the FF# in advance or should I just do it at the counter/kiosk?