Episode #3.6 - S3-E6
Continuity mistake: There's a rather burly woman with short blonde hair and a pink dress in the very last shot of the episode. She is an extra that keeps popping around in the ending scene at different times (before Dwayne's hot tin roof line, and during Catherine's magical angry bird memory). (00:51:35)
Answer: Most likely they had only tropical exotic drinks, he wanted an old fashioned English beer.