Originally Posted by
eponymous_coward
The recommendation would be to book MCS from virginamerica.com at the moment.
FWIW: I have also tried to book an award flight in coach on AS, and then upgrade to paid MCS as an elevate gold member. I was hoping the system would charge me the difference in standard coach cost. No dice.
After adding the itinerary to my elevate profile, the system did recognize and then let me select preferred seating.