We just returned used our GAD's last week at DHS and MK. They rock, best thing ever and I'll do whatever Disney wants me to to get them in the future. Saved us over 6 hours of waiting in line (had we actually stood in those lines, we would have just skipped them) at DHS alone. 6 hours of my time in Disney is worth more than the 1 day ticket, IMO.
Just wanted to comment on your list above.
AK: Kali was open one day w/ FP for everyone, closed for all others the other days we visted (3 total) but GAD's were still open (and a line over an hour well worth it). PW was not open for FP at all. Bug's life had GAD FP kiosk open one day, I didn't check the other days.
MK: Philharmagic had GAD FP open only (but never needed) and Pooh and Pan were giving bonus Philharmagic FP's out most of the trip (again not ever needed though). Stitch's Great Escape had FP open to everyone one day we were there, and open to GAD FP's everyday we were there (but never needed).
DHS: Indie, I don't even know where the FP's machines are anymore for it, are they still there? So I never noticed either way. LMAESS did not have any FP open at all. Little Mermaid had GAD FP kiosk open only and would have been handy on SWW days when it was packed, you had to wait thru 1-2 shows to get in, they were filling up about 30 min before the next show time.