Third party booking- adding on a guest

[goofyfan]

Hi all,

I know that if you book over the phone with an AP you can add on a guest when checking in and just pay taxes. Is this the same if you are booking using a site like booking.com?

I am looking to book for Feb (if we are able to travel then!) but not sure if it will be a solo trip or if my friend will be travelling with me. We would be staying in the Cheyenne. Can I add him on when we arrive and just pay taxes? Is this a thing that works?

[goofyfan]

Update: if anyone searches this up in the future you can book using a third party website such as hotel.com for one person and add more guests on arrival and just pay tax