In Vegas there is often a $55-60 resort fee that cannot be prepaid and is taxed. So a 2 day stay will add about $115 minimum and you can't use the credit for it. I'm not saying it's a bad deal - but I wouldn't feel too sorry that the hotel throws in some eggs.
(This was in reply to the above post about FHR being one night but now some hotels give breakfast in Vegas for THC)