Continuity mistake: The Commissioner visits Jack at his desk to get updates. Jack is busy with the tuning fork; during the sequence it is quite evident that the distance between his hand and the fork is different in the two main camera angles used. (00:32:00)
Continuity mistake: When Jack updates the Commissioner on how slowly both cases are going, his left arm is in a different position on the desk between shots. (00:32:30)
Continuity mistake: Florence is listening to the tape recording with her arms folded. When Jack and Dwayne say that the two on tape had an affair, Florence makes a comment; her hand is raised open or on her upper arm depending on the angle. (00:33:10)
Continuity mistake: At the silver wedding anniversary, Leon gives his speech about what everyone needs to "over-stand"; his hand is on the microphone, off it, on it again, etc.. (00:35:00)
Continuity mistake: Mayor Catherine Bordey approaches Dwayne at the melon stand and talks him into forgiving his dad. During the conversation, she has direct sunlight on her right side (shoulder, face) in the shots with the camera closer to her, and no rays whenever the camera is closer to Danny John-Jules. (00:36:55)
Continuity mistake: In the episode finale, Dwayne's beer switches hands two times off-camera for no reason and with no visible movement of the actor's arms.
Answer: Most likely they had only tropical exotic drinks, he wanted an old fashioned English beer.