MemphisMastermind said: Question: if one of the Sisters gets drunk, do they all?
I believe not. The Misaka network wouldn't be used to transfer feelings or mental conditions to the other Misaka's, they only share eachothers' thoughts, as far as I know. That's why when Accelerator kills them, the rest don't break down from the pain. Even if they could transfer mental conditions or feelings, they wouldn't be "drunk" since being drunk can only happen as a direct result of drinking enough alcohol. Since the rest were not drinking alcohol, they wouldn't exactly be "drunk."
.... Have you gotten your brain maintenance?What... hic, what a coincidence, hic, Celoli-tan," ... greets MISAKA 20000 while stubbornly pretending this is a chance meeting.
セロリ Celoli comes from Accelerator's nickname アクセロリータ Accelolita, due to his relationship with Last Order.