These other fine posters reminded me of a couple other things...
Install at least one outdoor plug in the middle of the awning area. Putting up a stand-up fan can really make the difference on a hot summer day. We also like to bring the flat screen outside at night and watch movies by the camp fire when we host a big camping trip.
Also by the door is a "transom shower", great for a refreshing cold shower, or rinsing off muddy feet/paws. But that's plumbing, another thread!
IMHO, installing a converter and charger would be like putting an 8-track tape in for your entertainment! A good inverter/charger does it all, plus a lot more. But that's me...
You'll find as many camping styles as there are posters here. Because I mostly do long weekends, I want as little disruption to my routine as possible. Heavy dependence on shore power/city water does not make for good boondocking.
So go camping in that Airstream as soon as you can, done or not! Set up camping gear in there (it's still better than any tent), and get you and your crew used to the space. It's great fun to sit around and dream about how fine your rig will be, and how those Class-A guys will gnash their teeth at the coolness that they can never attain! A word of warning: these "design sessions" can dramatically deplete the beverage locker, be sure to lay in an ample supply
Of course all 'Streamers are welcome to come camp down here in Paradise! We are organizers for the Florida Paddlers and Trekkers Meetup Group, and the Airstream is Party Central at the campgrounds we go to! Check our calendar for the trips we're taking throughout the state, maybe hook up somewhere?