I thought it went pretty well actually.
Aiming to get in at 8.30, to give me time to set up the work for the new temporary employees before they started for the day, I accidentally arrived at an eye-smarting 8.15am. (And then I had a shortened lunch break and forgot to leave early - so it was a long day for me.)
I co-presented their "induction" i.e. where the toilets and kitchen are, what breaks they're entitled to, and - crucially - how to do their job, and only made two unintentional spoonerisms. And didn't forget anything really important.
Then I got them to team up (the boy was left on his own, probably because he was visibly twice as old as the others and acted like he knew what he was doing) so they could get to know each other and also "spot" each other (spot each other's mistakes, that is). What a great idea that turned out to be. Pity I can't take credit for it; it was the boy's idea.
He called me Sweetie once, but I think we got away with it.