If you're a NW elite, make sure to check your seat assignments when you check in. KLM has a tendency to put NW elites in the BACK of their 737s.

Be very wary of Row 24 on KLM's 737-300s. It's the last row and the seats don't recline. But if you're flying to a European airport that doesn't have jetbridges, you might be the first person off the plane.