Is there a better alternative to the word options when referring to "extra purchase possibilities next to a booking you have already made"? For instance, you can think of food and beverages, audiovisual equipment and parking spots.
I think the word options in that context is a bit too vague, since it also refers to options on a stock exchange or choices one can make.
I was thinking about add-ons, or items. Do these suit better? Is there a more apt word still?