1. They need brushing.
2. They need more brushing.
3. Don't stop brushing.
4. They are nature's tampons, and can absorb up to a gallon of water. Which they will do. Happily.
I love the Maine Coon as a breed, and I love my Maine Coons as individuals. Maine Coons are magic.
But if you want an easy, low-impact cat, the Maine Coon is not for you.