Ultralight balloons (UB) are practically the same as “normal” balloons, but in a smaller version. The same physical laws and principles apply to them – they fly where the wind blows at the height to which they ascend or descend. The same rules for flying apply to them. However, the volume of the UB carrier gas is limited by law, which also limits its load, which is practically limited to a maximum of two crew members. Therefore, in ultralight balloons you will not find wicker baskets for several people, but usually only simple, light tubular “benches” for one or two people, on which (in the case of a hot air balloon) fuel bottles or bags with weights (in the case of gas balloons) are attached from the outside.
Ultralight balloons cannot be used commercially, as is the case with "large" balloons or airplanes. Like other sports flying devices, ultralight balloons are used for air navigation for the pleasure, joy and sporting enjoyment of their pilots/operators at an acceptable cost, with a maximum of one additional person on board, or for training to obtain the qualification of Pilot of an ultralight balloon.
Like any specialty, ultralight balloons also have their inspectors.