We only have one bathroom. The difference between Anne-Marie and I:
When kids knock at the door, she says, "I'll be right out!"
Me: "You know where the backyard is."
Sometimes for kicks I buy the kids those big bottles of Gatorade, wait 20 minutes, and then go take a bath.
Persevere in the struggle to feed your kids beets. It's worth it next morning when they all think something is wrong with them when they go to flush.