Web revenue: Allowing patrons to pre-book food/beverage + parking when they buy tix online

We are redesigning our website.

We'd like to connect with organizations that allow patrons to book food/beverage (either dining reservations or lobby bar cocktails/snacks), parking, etc. along with their tickets. 

We will have a multi-line shopping cart on the new site - and are exploring add-on and up-sell opportunities. 

Thanks!

Christine