Please choose the correct ending to complete the given sentence: Travel: [header] How to get a free room in las vegas [title] Sign up for a player's card. [step] A player's card tracks how much you're gambling throughout the night. As you gamble, you'll gain player's points that can go towards free benefits which can include a free or upgraded room.

Ending1: [substeps] Players can also get a free room if they win money. To win a free room, just hold a card up to the light to see who will recognize it or if one of the players won't acknowledge that it's there. Ending2: The card is a keyless note that can track your winnings and your free room. You can then reveal all your winnings that you earned from betting on free hotel rooms. Ending3: The player can show you where certain rooms are or how much the player charges per night for them. Some of the larger casinos have casinos nearby while others may be on the strip in a variety of locations. Ending4: You can sign up for a player's card on the casino's website or you can go to the front desk and request one. [title] Give the casino your address when you sign up for your player's card.

Answer format: ending1/ending2/ending3/ending4