"Well, for one. We found a powder of the same substance. It's a easy matter. Just switch out the undrugged bottle with the already pre-drugged one, take a few shots from it, then add in the powdery substance. You'd easily be able to getting drugged, while he was getting all of the chemicals himself. even if you got a bit in your body, it would be enough for you to compose yourself and continue your plot. And Kate wasn't in the casino all night. and you REALLY expect her to be able to keep track of 50+ people all at once? That'd be a physical impossibility. so just wait for when she's distracted.. preferably when shes in a argument or planting a note on a table, perhaps. to snatch the sword. And then, you just had to wait for her to leave for a few moments. You could easily had hid in the stock room, where you tore up that contract. And then left the room, then went out and left the sword in itself in the casino. Best part? Both of these times, she was distracted. so you wouldn't even have to sign your name on the list and you could get away with it."