Here's my n=1 experience from the trip I just got back from - 7/4-7/7. Keep in mind I was a solo traveler.
Had one prebooked FP for Saturday that I got at 60+2.
On Friday I was in the MK. Early afternoon, maybe just after lunch time I went on the app and did a bunch of refreshing and snagged a FoP FP for I think around 3ish? Hopped over rode FoP, refreshed and got a safari FP, while in that FP line refreshed and got another FoP fp. Additionally, for the rest of the evening I got another FP for Safari, 2 for Naavi, and 1 for EE.
Saturday I used my pre-booked FoP FP in the afternoon (other 2 pre-booked were EE and KS in the am), and was able to snag another one later in the afternoon. I also got on the standby line at 9:58 (park closing at 10pm). Posted wait time was 90 min but it took me exactly 25 min to get into the first pre-show room. During the afternoon I also used refresh to get another 2x for Safari and 2x for Naavi, and also got a walk-up for the Caring for Giants tour at 3:30 which ended up being a private tour and super awesome (elephants were so active!)!
Sunday I did all same-day FP's at AK, and managed to snag one last FP for early afternoon before I had to leave for Magical Express. Also snagged 1x Safari and 1x Naavi (this was after using a pre-booked FP for TSMM @HS that am).
In case you can't tell, I love AK, lol. As always, YMMV