if you prefert to deactivate your wifi APs during the night there is an easy solution.
for most architectures there is a package called “wifi-schedule”
if for some reasons you are out of luck and this package is not in your versions repository don’t worry.. just set up a cronjob – this basically does the same thing.
00 00 * * Mon,Tue,Wed,Thu,Fri /sbin/wifi down
00 02 * * Sat,Sun /sbin/wifi down
00 06 * * Mon,Tue,Wed,Thu,Fri /sbin/wifi up
00 09 * * Sat,Sun /sbin/wifi up
this will disable your wifi in the middle of the night and reactivate it in the morning (different settings for businessdays 😉 )