I used the refresh method at MK today and had less success than I did on my last trip, but still did pretty ok. Touring plans says today was a 7, wait times were pretty high for most of the day. I got the following as additional FPs from refreshing/modifying.
Haunted Mansion
Little Mermaid
Big Thunder
Space Mountain
Dumbo
Space Mountain
It was definitely more difficult than it was last time and I had to spend more time getting the rides and times I wanted, but they all eventually appeared. I could've gotten more but both the app and the mobile site weren't letting me book any FPs after about 8pm, insisting that FP distribution had concluded for the day (park closed at 10). Other people in line mentioned they couldn't book either. So not sure what that was about, but point is refresh worked out today.