Final answer:
Red plastic cups at US parties and Sikaiana toddy drinking sessions both signify social and hierarchical structures through their unique drinking rituals.
Step-by-step explanation:
Parties in the United States that use red plastic cups and Sikaiana toddy drinking sessions both feature practices that highlight social and hierarchical structures within their respective cultures. In both contexts, the act of drinking is not just about the consumption of a beverage, but places emphasis on the social interaction and the demonstration of cultural rituals. For example, in ancient Kuba society, men of high status would consume their palm wine from custom prestige vessels, which were skeumorphic and highly personalized to reflect the owner's occupation or possessions. Similarly, the use of red plastic cups in the US serves as a cultural signifier, generally associated with college parties and social gatherings where drinking plays a key role in the event.