What should I look out for when taking delivery?

Treat it like a dealership would treat your trade if you have one.
The Canadian Dealer Connect has a checklist of what should be done during delivery. A FCA Delivery Checklist. This should/could be used for some feature training as well. Hmmm.
I'm going to just stab at stuff. Some of this isn't just about taking possession of the car. These are some stuff to ask for help with. Materials in glove box. Especially the Maintenance Guide. Tire pressure matching door plaque. Paperwork prepared, that includes you. Get a demonstration of the gauges and the environment controls and operation. Maybe help setting up seat settings and aligning moveable foot pedals for best circulation and comfort. Ask about if you received a spare tire or not. It should be on the window sticker. Then start on Uconnect. Pair at least one phone and decide if you want to delete and try it yourself. Learn the basics of the Uconnect screen and a fast (it can never be fast) GPS run through.
Find all the USB ports. Ask for remote-controls to be paired to the screens. Test the remote start and the Keyless Enter 'n Go. Be shown the heated seats/wheel/ventilation toggles. E-brake, Adaptive Cruse, Power Liftgate, Parallel/Perp Park Assist, blind spot and rear cross path explanations. Ask about the Lane Keep Assist, Parkview, Auto-High beams, Roadside Assistance, and Warranty coverage. More than half a tank of fuel. No extra Mopar or aftermarket stuff unless agreed upon and remember the all in price from the start. See if the van has Extended Service Contracts already. If it is like here, you can ask for the Mopar Warranty past the basic cancelled and possibly get money back. Check the bill of sale plus the financing for add-ons and know some could be required by law. You might want to get the van delivered as naked as it can to keep the gross down. Then buy what you want.
Ask about the extra SOS and Sirius enrollment for the traffic and other perks. Learn about Over The Air updates. Learn if that dealership has courtesy vans/cars. Service dept hours.
Hmmm... something free that is useful in the car. Note pad with a pen? Interior and exterior cleaning kit? Small med-kit? Mini-flashlight? I give away little lights that plug into the USB ports. Safety break-out kit for cutting seatbelts and smashing a side window to escape.
Do plan to give 1 to 3 hours of your time if you bought the van loaded. And certainly ask for help after the sale for questions.
Well. Those are -some- pointers. I will remember a few more after I post, of course.