A recent movie synopsis tell us on a hard situation for an urban couple (Pia and Rob) who ends up on an island in which they get trapped by some bad people, Brett and Jimmy. The couple is wet and need dry clothes but they are given only towels. Sentence with my doubt is the following one:
"Angered by Rob and Pia's "lack of gratitude" and fuelled by liquor, Brett and Jimmy insist on payment for their hospitality and order Pia to cook their dinner while Rob waits on them, all the while goading Pia to remove her towel."
What does it mean "waits on"?
1) Rob serves them as a sort of servant?
2) Rob is waiting for something to occur like some kind of abuse?
" Is "...all the while goading Pia to remove her towell." connected to "Brett and Jimmy insist...? it seems a sentence disconnected despite the fact that it makes sense as for Brett and Jimmy provoking.
Thank You for your help