What are the utilities of a hot air balloon?

Hot air balloons have several utilities, including recreational activities such as tourism and adventure experiences, where passengers can enjoy scenic views from above. They are also used for scientific research, including atmospheric studies and weather monitoring, due to their ability to reach high altitudes. Additionally, hot air balloons can serve as promotional tools for businesses, offering unique advertising opportunities during events and festivals. Lastly, they can be employed in search and rescue operations, as their visibility can aid in locating missing persons in remote areas.