Didn't get started really, but crunched some numbers. The IRR for the venture in the 3 years is -68% and there are still 16 mil miles to be cashed out.
Based on the current fuel price of $5, and using the average of the average fuel/labor expense over the 3 years, I get an outstanding Liability of around $2.5 Million left over from the 3 year contract. Granted this is amortized over about 10 years or so, but this would need to be addressed in the renewal.
If they were to keep this thing going, then they'd have "Other Expenses" to take care of as well. Basically, unless the price of an Air Mile is increased 10-fold, this venture is a lost cause.
Let me know how you're thinking of approaching this.