A digital key in Google Wallet and a key card?

What do I need in order to activate a hotel room key in Google Wallet?

How do I set up and use my hotel room key in Google Wallet?

What's the difference between room keys in Google Wallet and mobile keys in the app?

Where can I use a hotel room key in Google Wallet?

At which hotels can I use a room key in Google Wallet?

How can I tell if I am able to use a hotel room key in Google Wallet?

On how many phones can a hotel room key be activated in Google Wallet?

Can I use hotel room keys in Google Wallet if I have multiple hotel rooms or multiple hotel stays booked?

What if my Android phone is lost or stolen?

Can I use both a digital room key in Google Wallet and a physical key card at the same time?