1. Wei Wuxian may notice that the handlers are also jittery, though it's far likelier that this is because of nerves, anxiety and legitimate fears, sooner than the predatory excitement that's riled up the spectators. The handlers seem to fear for their lives and answer every question quickly, muttering they shouldn't be seen talking.

Wei Wuxian and Emilia are welcome to memorize their faces or dog tag numbers and try to meet with them later, or to get anyone in the Hand to do so.

2. Yes, you can pilfer one booster in a glass vial with a conveniently tight stopper!