The validity of a Smart Destinations pass can vary depending on the specific type of pass purchased. Typically, passes are available for a range of durations, which can include options such as one day, two days, three days, or even longer. For many passes, once you begin using the pass by visiting an attraction, it becomes activated and remains valid for a consecutive number of calendar days based on the length of the pass purchased. For instance, if a three-day pass is activated, it will generally allow the user to visit a designated number of attractions over a three-day period. It is important to note that the specific terms and duration may vary among different cities and attractions, so it is advisable for users to refer to the details provided on the SmartDestinations.com website for the most accurate and current information regarding the pass they are interested in. This will ensure that you have a clear understanding of the validity and usage rules associated with your particular pass.