The opening scene of "The Group" by Mary McCarthy sets a lively atmosphere during the cocktail hour in Priss's hospital room. The mood is described as "terribly gay," suggesting a cheerful and carefree gathering despite the context of a hospital. This contrast brings a sense of camaraderie among the characters, implying that they are finding joy in each other's company during a challenging time.

The description captures the essence of friendship and social bonding that often occurs in difficult situations. It hints at the dynamics of their relationships and the support they provide one another as they navigate personal struggles. This cocktail hour serves as a backdrop for exploring larger themes of life and connection within the story.