dotcommer,
Not sure why many are bringing campgrounds into the discussion, you mentioned Flying J's specifically. Although, in my opinion, I find Walmarts to be more accommodating and generally more plentiful. But that, too, is another discussion.
Yes, you can run your generator through the night. As has been pointed out, make sure your detectors are all working properly.
One suggestion I might make is about an hour or so BEFORE you pull over for the night, turn your generator on and run your A/C (two, if you got 'em) on HIGH at a fairly COLD setting. What we find in our rig is when you pull over, there is A LOT of heat underneath the vehicle in the engine, exhaust pipes, muffler, tires, etc. and that heat rises into the coach. Yes, our rig generally is pretty well insulated, but you can still feel that heat coming up into the coach. By keeping the entire rig cool BEFORE we stop, that excess heat is comfortably absorbed by the cool RV interior. In some cases, depending upon the outside temperature & humidity, you might be able to be comfortable with just a window or two open.
Due to the size of our family, we usually travel with at least one A/C running anyway while on the road, but if travelling in the heat and knowing we'll be pulling over within a few hours, we'll crank up the bedroom A/C as well to make sure it's nice and cool when we finally pull over to sleep. Many times, I'm able to shut the generator down within an hour after we stop.
Lots of variables, but in my opinion as long as your equipment is properly functioning, no problem with being comfortable.
Safe travels,
~Rick
