Sue, your comment on "exaggeration" made me smile. We did our first trip north in 2002. Two young kids in the back seat, and pretty green to RVing scene. One night we stopped at a "full service resort" with a glowing Milepost review. I had convinced the wife that we really should stop at a real restaurant, since we had been roughing it for a week or so, getting in to the campsite late, and eating late, if at all.
This place was out in the middle of nowhere, yet promised "the finest dining on the highway". Well, we had some version of burgers and fries, and there was no way that whatever we ate was store bought. Tasted like every deer I ever dropped, LOL. Since this place is a "resort" and campground, we stayed the night at a "full hook-up" site, as recommended in the Milepost. After I backed into a site, I asked the owner where the sewer connections were? He then informed me that the "bush" definition of full hook-ups wasn't the same as it is down south. Seems to the proprietor of this luxury resort, "full hook-ups" is defined as a 20 amp receptacle and a water spigot.
We later stayed at a place that offers "30 amp" sites. There might be a thirty amp hook-up on the patch, running straight from the genny to the owner's single wide, but the other 99% of the campground in 15 amp extension cords randomly popping out of the ground. The place is a dump, full of abandoned junk, and garbage filled fire rings. The place was so rough that when I spoke to a highway crew staying there, they were furious about the conditions, and debating if they should just drag up and relocate to a gravel pit.
For at least the next decade, the Milepost continued to run ads from both of these places, and sung the praises of amenities that simply do not exist, and fine dining that's bush meat, and reheated dreck from the Cisco truck.
I loved the whole experience, did it twice after that, and can't wait for next time. That said, I wouldn't go without a fairly current milepost, knowing that anytime I see any business listed with an accompanying advertisement, everything may be more that a bit embellished.