How does this work?

[Dakota731]

When doing fastpasses next week will it block out my ADR times? I wondered if I can book FastPass then cancel ADR later?

 

[cluvsdisney]

Yes, you can do that. I have a fast pass that overlaps an adr -I got a message that there’s a possible conflict but the app let me reserve the fp.

 

[Queen of the WDW Scene]

FP+ and ADR's are not on the same "system".
It allows you to book them overlapping.