The floats are typically multilevel, with a lower and upper level, and one or two mezzanine stations (typically near the back of the float). The float "captain" typically rides on the upper level, which lets him or her see everyone on the float. For floats in night-time parades, the structures are wired for lighting, and a portable generator is towed behind the float to provide power. Each float also contains some type of portable restroom facilities. Although from the street, a Mardi Gras float might look like a dainty, flimsy contraption, the reality is that they are quite sturdily built and are capable of withstanding a good rocking by the riders.