Confused about weight distribution

You can try it without the weight distribution hitch and see how the Caravan rides. The problem is the Caravan has such a soft suspension that it will take very little weight to make the car's tail end almost drag the ground. The weight distribution hitch will transfer some of that weight to the front axle.

I found this on a Dodge dealer’s website

Best-in-Class Towing
When equipped with the proper equipment, the 2016 Dodge Grand Caravan is able to get a best-in-class towing capacity of 3,600 pounds. The available towing package is called the Trailer Tow Group, and includes a Class II receiver hitch, a load-leveling and height-control suspension, and the average four-pin connector wiring harness for the trailer.

If your Grand Caravan has the Trailer Tow Group as an option, then the towing capacity would be 3600 lbs. A GC without it would be limited to 2000 lbs.
FYI, any trailer with electric brakes will need a brake controller to activate the brakes. You will need to check into this.
FWIW, I towed a popup with a Grand Caravan about 15 years ago. The GC did okay in the flatlands, but strained in the mountains. I recall being concerned about wear and tear on the brakes and transmission.
Hope this helps. Keep asking questions!

Sorry, wizards, but what’s hard to understand? 2,000 pound limit without WDH...i.e. you’ll be over 2k loaded and wet...seems clear to me. Haven’t seen a TT, 5er, hybird or pop up towed dry and empty in my life.

I would not tow anything with a grand caravan. I had one and I towed a 12 ft boat and the tranny went out. they are not the best thing onthe planet. it cost a ton of money to fix so I traded it in on a truck.