Originally Posted by
MSPeconomist
True, but if you can add 500 MQMs each on average for four SDCs, the cost is only $200. A weekend trip will probably cost more, even if you don't count hotel, meals, and airport transportation expenses.
Paying the $50 fee does not waive the original booking class requirement for SDC. If original booking class is not available (which will likely be the case for most flights), the only option is Same-Day Standby -- which does not permit routing changes.