$50 ain't squat. That's not hush money, that's just dangling a carrot. A cheap carrot.
Or they just threw that in there because they keep getting drivers showing up to orientation without a penny to their name, and they got tired of listening to the whining about being hungry.
My last orientation, we got breakfast, lunch, and dinner for all 3 days. That was probably about, around $50 value. There was still a guy in my class that kept complaining he was hungry, and he kept cleaning out the snack table. Lol