I used to have a mode in my Smartthings called “Party” which i could activate at any time before my “Night” mode kicked in and shut down all non-essential lights in my home (11PM). It would basically prevent “Night” mode from happening until i manually activated it. Can anyone help me with what i need to do? Better yet, send me the code? 
Thanks in advance. Peter
Are you using a Routine to shift to Night mode? If so, what are the triggers and actions of that Routine? What would the mode be before you invoke Night mode? Do you have an actual location mode called “Night”?