There is a difference in how the two fleets serve the cabin, on WW we have a senior crewmember (CSL) who is in charge of the whole cabin, they normally take the drinks order and then prepare the drinks , the cabin operator then delivers all the drinks.
On MF there is nobody in charge and the two cabin operators serve half the cabin each, I think the WW system is better and more service friendly, don’t ask me why we don’t work the same way as it doesn’t make sense.