<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by EDoyle:
I understand that RTW tickets on AA book into A (first) and D (business) fare classes. Aren't A and D classes subject to inventory control? That being so, I can't understand how people leave their tickets open, or can change schedules/routes with any assurance that their fare category is available. Am I missing something here?</font>
You are missing only the fact that people who leave their travel arrangements open tend to have flexible dates.