I've had 2 new Sunseekers. On the first one, the first camping trip was just over the hill, intentionally, to try the unit out. Set it up, turned on the stove, no gas. We stayed the night, but no stove, heat or hot water. It turned out to be a defective regulator. Not Forest River's fault, but it was replaced and everything was fine afterwards. At home before the trip, it worked fine...
On the second new Sunseeker, although I did the driveway camping tryout, going down to Florida last spring, hit some nasty bumps going through Jacksonville. Our campground was an hour south or so, and when I got out, I smelled propane. Again, a regulator issue. This time, the vibration caused it to crack.
Lesson learned for me, carry a spare gas regulator. Besides some minor issues that could be fixed on the spot, nothing major to spoil the trip.
Now, a year after taking possession, I do have my outside kitchen door being replaced under warranty because of warpage however.
If you can, get everything up and running at home before setting out.