My wife will pee in the woods but poopin' in a bucket..., well...
So the bathroom issue, cold, heat and boredom in the passenger's seat.
My son its boredom, my duaghter it boredom and the bathroom issue.
My wife was sportier when she was younger, but now she can create an unreasonable fear in her mind, but quick. Her four useless, boring, do nothing sisters and their usless, do nothing, boring husbands/ex-husbands don't help either.
Her current phobia is black bears. We have them in western MD but your more likely to be donked over the head by a falling limb than see a bear in daytime (unless maybe you're looking for one.)
To overcome the objections this summer, I'm having a tear drop built with a RTT on top to accomodate my whole family, with heat and hot water too. And I'll make sure there is a swim, hike or some fishing during the day to avoid the boredom of just riding.
For the bathroom issue, a pop up "shower room" and this:
Almost like home, and it seal tightly (I'll use the treated waste bags for easier clean up, but this thing actually has a pump out!
JPK