There is an over-reliance on sitcom style cleverness and sarcasm in the script which does not ring true for these characters, and there are more than a few moments of weak dialog. A great deal of the dialog is meant-to-be clever jibes and insults between the characters. As a result, for most of this movie it's hard to see why these people like each other and continue to interact. The moralizing is simple and a bit shallow and the relationships are largely undeveloped, but there are some moments of genuine feeling and emotion which keep it engaging. Light fare, relaxing to watch if you don't expect too much from it. More like a quickly written TV script than a fully developed movie script, but overall slightly more good than bad.