I buy F and do SDC about 60% of the time. When I do SDC it is about 50% of the time I get booked into F or J and get the 100% bonus vs the standard 50%. Last was week ago wife and I mco to den Via msp and she woke up sick so we pushed 6am flight to 1pm. Was a decent difference. I plan to sdc mco to las in a week maybe more bonus for me. I don’t count on it or even factor it into the decision.