Of course remember we often only see the bad stories here...
It is good advice to make the first trip close to home... and I intended to follow that with our current RV (our second) - but the timing of purchase, one return visit to dealer to fix a few items - and a visit to another dealer to install tow system (primarily on Jeep - but brake monitor on MH) - left no time to do so... So its first trip was a 3 month trip from Michigan to Florida last winter.
Knowing that was happening - I certainly spent more time crawling around and checking... and always carry an assortment of tools (and had the toad behind in case) - but no major issues.
Not something I'd recommend in general - but they don't all end up bad...