Originally Posted by
pdac1975
By the way, seatcounter.com is a great tool. Thanks for pointing it out. One question, what's the difference between A and F classes of service?
A is Discounted First Class
F is Full Fare First Class
For SDC purposes, you want to see if there is Y availability (an open seat in which you can SDC into) then F availability (to gauge your chances of grabbing one of the open F seats, if any).