Adding to the confusion here:
I just called a nice lady at the ADA about this whole mess, and this is what she told me.
First, you still have to mark schools & send the reports. The ADA will forward scores to AADSAS, but AADSAS is not authorized to release/send schools your scores unless you have gone through the ADA and indicated which schools you want your scores sent to, thereby giving permission. So if you listed 5 schools on your DAT, but you're applying to 10 schools via AADSAS, only the 5 schools you marked will get your DAT scores. You have to go back and mark the other 5 schools. That is what I was told.
If you register before July 1st, you have the $225 or whatever fee, 5 free schools, and $25 for each additional school. After July 1st, the registration fee for the DAT goes up to $285, but you can mark as many schools as you want without paying additional fees. So I guess if you're applying to a lot of schools, it would be best to wait to register until July 1st if you haven't already.
I believe if you're sending reports AFTER you've already taken the exam, it's $25 for each school (even if you didn't use up your 5 free ones when you registered). Someone correct me on that if I'm wrong.
I mentioned to her that I had called schools and they said they didn't need a separate report & that just the AADSAS is fine. And I didn't completely understand, but it sounds like the ADA sends a file, but many of them just choose not to look at that and instead just go by AADSAS. But she said that, regardless, you still have to mark/authorize all the schools.
