Due Date, Story, and Structure

Just watched the new comedy movie "Due Date" with Lee last night. So disappointed. All hype and hot air. It wasn't because the situations weren't funny, it is because there was no structure to the story. It really felt like a number of funny situations were thought out and then dumped onto a road trip setting. But the story had no gravity, no center. So it was loose and made no impact.

Made me think of my own story, it is exactly the same, I am afraid it lacks structure and a central impetus to make the readers want to turn the page. A series of events is not enough to keep someone interested, not for long.