Although we love kids, this will be a kids free event. The Marriott has vetted babysitters from a reliable company that you can hire while at the event. The Marriott also has suites that can accommodate families.
Carmel and Monterey are pet friendly cities so most hotels allow pets.
It depends on where you want to stay. If you want to stay closer to Pebble Beach I suggest the Hyatt. If you have any more questions you can always reach out to us directly about where to stay.
I'd check on Expedia, they always have reasonable rates.