Wow, I did not know this. I'm a RR member. I have my RR credit card, will that work? Or do you need the actual membership card itself? Do you know if you can buy more than 1 ticket at the discounted price? I'll have to look into this deal even further. Thanks for the tip. I've been searching for a good deal.
As far as individual tickets go, I had the same question about the expiration. I sent an e-mail to SW and asked them. Yes their individual tickets expire 1 year from the date of purchase. So if you bought it today (10/19/2009) it would be good for one year (last day to use would be on 10/18/2010).
Their one day tickets can also be exchanged to get a 2nd day free if you wanted to go back. Only catch, you have to make sure and exchange it that same day before you leave; and it's only good for 7 days from the date of exchange.