Just realized that you do mention "O" class further down (AA fare classes). Should've read through the end before posting here.
You still might want to add it under Table 1 though for completeness' sake.
One more suggestion:
Under "AA fare classes" you use
Plan AAhead on a couple occassions. I thought these were all called
MileSAAver now, right?
Again, thank you for this great piece of work!