@ejj - ETA is by late summer. We’re evaluating a couple of different strategies for optimal FP use. And the Optimizer will know that you can get more day-of FPs after your advance FPs are done. We have approximately a million data points for advance FPPs now, so the stats team is working on predictions.
In some cases, it may tell you that 1 or 2 advance FPs are more useful than 3, because it allows you to get more day-of FPs faster. So rather than getting a 3rd advance FP for, you know, Imagination at 8 pm, it may just suggest 2 advance FPs so you can get a second, day-of Soarin’ FP at noon. (Assuming you want to ride Soarin’ twice.)
I’m working on code now to be able to easily implement different strategies, so we can test what works. I’ll ping y’all when something’s ready to test, because I think you’ll be interested. If you can describe a strategy that might work, too, let me know. 
Dropping off the forums for a bit now so I can code.