Oh wow ok I didn't realize this that you could keep choosing a new FP every 90 minutes whether or not you have used your other FP. This makes it even better! Does MP allow you to overlap return windows unlike FP+?
Yes (with one exception; you CANNOT pull another FP for a ride for which you already have one which you haven’t yet used). You can also stack traditional paper FPs, but less so, because instead of the Maxpass’s maximum 90 mins until the next pass, those don’t allow you to get another until 120 mins later. In my experience, those extra 30 mins add up.
Also, with Maxpass you can continue drawing FPs while taking a mid-day break at your hotel. One day we were resting at D-Land Hotel. I had noticed on the app that Space Mountain has gone off line on and off that morning, so I gambled & got a FP with a return time we were unlikely to make. Lo & behold, the ride went down & our FPs automatically converted to “use any time (almost) anywhere” multi-experience FPs that we got to use later that afternoon!
In my experience, canceled FPs with earlier than the regular paper FP return time are gone very quickly, so I don’t think it’s realistic to see one, cancel the one you’re already holding, and then get the earlier return time, because in the bit of time this takes, somebody else is likely to have already snagged it up.
However, getting canceled FPs can be a sweet Maxpass benefit later in the day, when you are eligible to get another FP, but anything you would like to ride already ran out of FPs for the day.
One afternoon I kept checking & refreshing the FP selection window in the app, even though we had already left the parks, just out of curiosity & “for science.” Canceled passes did pop up here & there but were gone again almost immediately—so a quick decision & a fast trigger finger are great assets in this case...