I had a ressie for 4 @ Tuskers on 9/21 @ 10:25, which I wasn't really happy about but only thing available. Tonight I looked up ressie for 5 and got an 8:15 on the same day!! If I cancel the ressie back down to 4 now, will they change my time? Should I wait till closer to cancel the 1seat just to make sure?? Thanks new to the ADR so still learning.