Just to add to Wiggy’s excellent post, one of the benefits of the DFW is that you can elect to work during some or all of it, thereby earning extra credit which can be ‘spent’ by taking days off elsewhere. Thus, if the dates of DFW awarded are not your first choice, you can maybe get some better free days. This used to be easier under bidline and I’m no expert on JSS but worth considering anyway. You can’t work during leave, so that is the main difference.