It not, use once daily, after dinner. Anything midnight snack...soak in sink water.
If there is only one long cycle. then decide if you are going to use it daily? If not, stop complaining, it was your decision not to use it becasue u said " I can wash 2 rounds in 3 hours". You are making yourself the washing maid too, not just them. USE THE MACHINE.
no dish to use? Then I will go out to eat, as simple as that.see how long they can stand it. If you break first (start washing), you will end up washing for the rest of your life. Going out to eat need not be expensive...you can buy a sandwich in 711, but finish it outside,otherwise they will ask you to buy for them. If C6 complains, ask him to wash the dishes or tell his parents to share the responsibility. If you are working, you dont need to be the house maid.