I got fed up of trying to do once per week event and figuring how many times Alice should be drunk on Friday and which dialog options close it and just set var which finished disco event
If you know how to read unified diff,
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shows changes in 0.19.0.011 cheatmenu and other stuff. Don't remember if it will be enough to show and flip nightclub state. There are two variables in disco event and only one was changing in game. "set_otn_43!set_loco.oli.step_5!set_poss.oli_14!" part is just a hack to recover corrupted vars. No need to activate it.
save61 should be right after setting nightclub. Before first time with new public Alice punishment
Edit: technically it is possible to do that in 0.19.0.012, but you must have sex ed with Lisa at 61 and not at bugged 65. Save often, make correct choices at 3:00 am and do not leave Kira alone next to sofa after party story. If you want to do it in your own saves, cheat menu updates required to see your poss.sed, nightclub and poss.aunt values.