A friend's Facebook feed turned up this spectacular innovation in bizjet luxury. Amidst the ensuing discussion of its practicality, given the usual ambiance of an airport parking area equipped with ground power, and the tendency of a running APU or to disturb the tranquility of an afternoon on the sundeck, someone--who I hope was being silly--helpfully pointed out that the deck was "only for use while the aircraft was not in flight." I really want to see the aircraft flight manual now. I'll bet they were required to stress that point. They usually assume some common sense, not like general consumption products, but I've seen a much older aircraft manual exhorting pilots not to carry children in the baggage compartment, and I really suspect this one has a published limitation on sundeck deployment.
Maybe they have batteries, or a solar array sufficient to run the stereo, keep the drinks cold and power the blender.