@tep31 thanks for providing some information regarding DA. I'm also aware of the info provided above, yet on the documents provided by the USCIS for DA, it doesn't not mention Army Reserve soldiers are not required to file for DA. At least I was not able to find it anywhere. The whole thing is a little vague. For instance by "not required" do they mean DA is optional AR soldiers or if you apply it will not be granted? What about Reserve MAVNI soldiers family members? What about work authorization for Reverse soldiers that have financial hardship if you don't have DA, can you apply for it anyway? See, I'm not necessarily asking you these questions, but I'm just outlining how loose the terms are. They almost make it impossible to navigate this whole thing without an immigration attorney.
If anyone has been through the DA process, please let me know how it went and what you did, specially if you file for I-821D. I-821D which is specifically the form for DACA is not mention in the list of document to submit when applying for DA as MAVNI.