Now what to do about the bartender?

Give him purpose

You turn to the bartender, noting that his dick has grown while he has stroked it. "Make sure you spike the drinks tonight, love," you wink at him.

"Yes, mistress," he replies, releasing his grip on his shaft and turning toward the door.

"Find some clothes in the storeroom, and serve drinks tonight. When your job is done, I will thank you personally..." You emphasize this by running your tail along his thigh, his cock lurching up.

"Right away, mistress." He runs for the storeroom.

You have not earned Lilith's greater gifts such as glamour, and this is something you wish to earn as soon as you can. You know corrupting an entire restaurant will earn you some attention, but you need something better. Whatever it will be, it will require many souls to energize you.

"Let's go fuck!" Jenny begs, twisting her nipples and running her tail in and out of her cunt.

"Patience, pet," you soothe. "Your soul gave me a new power: I can link minds with one I have infected. I will link with our bartender and we will know the instant the majority of the patrons are under Lilith's influence. Then, my sweet, we will fuck the night away."

And so you close your eyes.