Originally Posted by
raistlin
Wirelessly posted (Mozilla/5.0 (BlackBerry; U; BlackBerry 9800; it) AppleWebKit/534.1+ (KHTML, like Gecko) Version/6.0.0.246 Mobile Safari/534.1+)
You need the ticket to be in class H-B-M-Y, otherwise upgrade is impossible. Also, there must be an available seat in I class (the lowest business class fare).
You'd better check both conditions before converting points.
But, say everything were "in order," could I do it over the phone ahead of time or would I have to hope the seat is available at check in?