Your initial search will check our availability for your party size. After searching availability, please be sure to add as many Adult and Children tubes as needed for your party by clicking "Book".For example, if you have 2 Adults and 2 Children, you should have a total of 4 Units booked. You need to add each tube individually at the desired start time. Even though you're not staying overnight, please make sure your arrival date is the actual day you plan to go tubing, and your departure date is the day after.