The fact that tutorial bottle contains nectar indicates it's either very, very vast in the bottles or that it regenerates, otherwise you feel like the tutorial world would be empty already. This indicates then the bottling is indeed very dangerous if there's a nectar crisis in the world...
Ah yes, the trainee world is only used to train new recruits, thus it still has lot of nectar to bottle.
And we do know it can be a dangerous job since there was a warning in the contract. But what could make it dangerous? Hmm… Soon™











