@heartvalley We do offer a feature in which you can display additional facilities and sell them along with your rooms. The customer will be able to select the service or a product to the cart from the Room type page or the checkout page.
Please check this link for more details: https://qloapps.com/qlo-reservation-system/#section-12
But if you want to just sell tickets which will be available for just one day then there will be a custom development required and it is up to you if want to do it yourself or want our help.