Eagle, hope you and the horse did well (and hope you get a rest when Nov arrives!)
You asked for a report about the trip. I did a brief post about this in my build journal, but here is an expanded version: 5,000+ miles, 16 days, 10 cities. We drove from Calgary, AB to the Toronto, ON area and back. It took 2 days to reach the ON border and another 2 days to get THROUGH Ontario; it's a huge place! Mark has relatives all around southern ON, and we visited as many as we could in the time available. The trip back took 3 1/2 days; we drove for 12 hours each day in our eagerness to get home again.
The foamie towed well, and was very comfortable for sleeping in. We stayed at a lot of Walmart parking lots, and a few pull-over places such as truckers use for the night. There was traffic noise at all these places, but we slept well despite it. It made a difference to be in our own cozy little space, with the same blankets and pillows we use at home.
The first night, we found out that, though the trailer was waterproof, the door was not mosquito-proof!

This required a stop at a hardware store the next day, to buy some weatherstripping for the door. I never dreamed the little devils could fit through such tiny gaps! The factory-made windows also had a tiny gap which I covered with masking tape.
Each morning on the road, we would get up, shift the trailer gear from "bedroom" setting to "travel" setting, and wander off in search of washrooms, gas, and coffee (usually not far away). If we had stopped in a more remote place, we had a porta-potty- the kind that is just a toilet seat on a 5 gallon bucket. This proved to be priceless on several occasions!

Some places were so mosquito-infested that we just didn't want to open that door after dark!
The ventilation was excellent, and we could leave the windows and roof vent open a crack, even if it was pouring rain, without any water leaking in.
Maybe this a more complete report than you wanted.

Here are a couple of pictures.