Southwest has changed its Rapid Rewards program, placing capacity restrictions on seats for the first time. On a positive note, you can now take two years (instead of one) to earn credits.
This is a massive and unfortunate change—Southwest was the only carrier to offer free seats with no capacity controls (ie, if a seat was available, you could have it). Its press release notes that there are no blackout dates, but that is a canard—if they make no seats available, then it is effectively a blackout date.
The company is spinning this as a great change for travelers (what else are they going to say?), but it’s a shame that one of the last great perks it going away. Alas poor Rapid Rewards, we hardly knew ye.