I can see why getting the carts out might not be worth it when they are predicting a lot of turbulence. But last night on a ATL-ORF flight, there was very minimal rough air until the end of the flight, and the FAs stayed seated (or standing in the galley talking) and didn't even serve in F. There was no reason they couldn't have done a quick service in plastic cups, but took the chance to just avoid it altogether. That's frustrating, we had a minimum of half an hour with not a single bump.