As others have suggested, it varies, but in my experience, knowing my full name, room number, possessing a key and knowing how I paid for the room has always be

As others have suggested, it varies, but in my experience, knowing my full name, room number, possessing a key and knowing how I paid for the room has always been enough. Last four digits of the card used for the room tend to seal the deal in every case, but were not acceptable for MGM (despite me having that very card on my Apple Watch). In the UK, at least, it's unusual to show a driver's license for anything (except buying alcohol if you look young) because many drivers don't carry them, whereas in the US I had to show it every time I even checked into a hotel and even occasionally when buying things with a credit card.