I can't see CO charging miles/co-pay for 739 domestic F service. There is just no way they have the cojones to do that.

I think it will be a standard 15K no-fee mileage upgrade with no EUA, basically the same deal that NW had on its west-coast to Hawai'i 753 trips.

In flight service will likely be the standard transcon product westbound and either soup/sandwich or snack plate service eastbound depending on the departure time.