Cho-Ja
Hmm.. thats no good.
Run off and try to swipe some glass jars or mugs to pour it into.
then resume filling them with pain inducing venoms
eh, you find a couple wooden buckets and a ceramic pot. they hold the venom without dissolving. You manage to fill them each with a litre or so of venom, but you can't tell how painful it will be without testing it. You look around for "volunteers." Well, there are inn employees, and Fiddler and the eye are hovering about, just out of throwing distance.
Slink off to a nearby alleyway and use magic to make myself appear terrifying. If the spell succeeds, leap out in front of an unarmed peasant and hiss at them. Observe their reaction.
This goes comically well. You make yourself look very large, midnight black, smoke pouring out of your eye sockets, a sickly green glow behind the smoke, jagged fangs and serrated claws. Your hiss rattles shutters on the windows nearby, and the peasant you chose faints dead on the spot. A dozen rats flee in terror at the sound, and you scare yourself into defecating on the spot. Babies within a three block radius are crying now, and you smell curdled cheese.
"Say, insectoid friend, are you sure we need chemical weaponry to handle a crowd? I mean, it sounds like a fine idea for a last resort, but I suspect it will not endear us to our employers if you catch my drift."
Don't stand too close to Cho-Ja's perverse saliva experiments. But observe anyhow! He seems to know what he's doing, metal bucket debacle aside.
He seems to get the hang of it after a minute or two, and pours copious amounts of bodily fluids into several containers. It smells spicy and somewhat rancid. I bet there's a fetish for this.
"Concur."
You analyze the contents of the bugman's toxic spittle, and are fairly confident you could replicate the formula, given the proper ingredients, which might even be located in the kitchen.
A few people are starting to trickle into the courtyard, listening to the tavern singer and lutist, eating the snacks set out for the occasion, and trying out some of the party games that have been set up. You still have an hour or two before the crowds start to gather in number though, and another hour or so before sunset and the peak drinking hours. Anything else you wanna do during that time?