This appears to still be happening to vampires in NPC mode. One of my sims Ana and her spellcaster celebrity boyfriend Daud had what looked like a date at the restaurant my current sim is running, and Ana kept getting up every few seconds to drink a plasma pack. She also wouldn't eat her garden salad, unlike other vampire guests who come in occasionally (they all have the weak stomach trait), and those ones happily eat and barf and eat and barf ad nauseum... pun intended. Anyways, while Ana's salad sat on the table, it screwed up the restaurant AI and no further food would be presented to the couple until I had my sim clean up the salad. That table never fully fixed itself by the time I gave up and shut down the restaurant at around 5am (15 hour shift anyone?) because the couple's date appeared to be stuck doing not much but conversing while the girl guzzled plasma packs. What's weird is I play a lot of vampires, including my SuperSim Tirsden, and I'm pretty sure I've never seen any of them autonomously drink a plasma pack whether in active play or NPC mode.
TL;DR: Restaurants do indeed seem to make some vampires chug plasma packs and today is the first time I noticed it.
@crinrictHi, Recently, I made a club and got the premade vampire sims as the club members. Vlad, Caleb and Lilith. My sim is a human but completed Vampire Lore skill, so he knows how to convert fishes and frogs into plasma packs. He created about 10 plasma packs from frogs and fishes. And left them on the kitchen counter. While the club gathering was on, they started drinking plasma packs and keep drinking..drinking.. It happened a few days ago. I was playing with the human sim for the millionaire scenario. The next day, I activated a club again, and they emptied all plasma pakcs I offered. Next day, I activated the club gathering in community lots and left some plasma packs for them. No one touched it. It seems like it happens at home lot.
One more thing is now I'm playing with my active vampire sim in Sulani for millionaire challenge. He was ok for long days. He didn't consume his plasma packs unless he was thirsty. But yesterday, suddenly he started drinking plasma packs constantly while authenticating relics although his thirst bar is almost full. Now I put the plasma packs into the storage where he cannot reach. Anyway he doesn't need any plasma packs.
