Just booked this for Memorial Day weekend! I didn't get any targeted e-mails (possibly because my account is registered with a non-U.S. address) so I suppose this is open to everyone. This will go a long way towards helping me with the accelerator!
LAX-FAI is currently 9,000 miles in BE and 14,000 miles in Main Cabin, and the sale is also good for cash tickets; ex-LAX is $158 and BE and $221 in Main Cabin, and is slightly more ex-BUR ($162 in BE). I didn't have much of a choice though with the flights (leaving the Saturday of Memorial Day weekend means I have to leave in the afternoon and arrive either at 11:40 pm or 12:20 am; departing means I leave at 2:00 am regardless of the day), but no matter – I'm excited to see Alaska!
That said, I'm appalled at how expensive rentals are up there: an SUV is $100/day!