Originally Posted by LostInPA

Coworkers have all had good experiences on KL, but I have yet to take them (always have bought their ZED as a backup). In AMS, KL agents work the DL flights and I have had good experiences with them there as well.

My experiences in Europe (mostly with LH) is that agents always enforce carry on baggage size and weight rules. Just make sure whatever you're bringing with you actually fits their policy.