House-only Shoes, and other hardwood questions

[RealLifeMama]

We are moving to a house with hardwood floors. Brazilian Cherry, if that makes a difference.
We have 9 people in our house, so there will be a lot of traffic!
When we bought our current home, our carpet was already in not the best shape, and DH is very adamant about always wearing shoes because his feet are so delicate, LOL. So, we never enforced a "no shoes in the house" rule or bothered with house shoes, even though I think it is gross to wear shoes that have been outside in the house.

We agreed that we would have a "no shoes" or "House only shoes" rule in the new house. I am leaning toward house shoes so we don't have so many footprints to clean up on the shiny wood floor.

What would you recommend for house only shoes for both adults and children? They need to be inexpensive and easy to put on and take off. What would you think should be the procedure for them?

Also, how do you clean the floors? Obviously dust them with a Swiffer or something, but what about footprints?
Also, how easily do they scratch/scuff? Can the kids run cars or play with toys on them, or do we need to put a mat down?