First come first serve. Having status does have benefits and yes, that includes dibs on storage space (including bags that fit under the seat in front of you but you choose to use that space for your legs and feet), and a power outlet, period. And no, you have no responsibility to bring a multi plug outlet to share with seat mates. With that said, when your device is juiced, unplug it if the other outlet is in use. Presume someone wants access. After unplugging, if no one takes the outlet, then by all means, plug in device two if you want.