We have camped in the park the last two years in a row in both the upper and lower pines campgrounds with another trip booked for the end of May. We also made a trip a few years back and stayed in North pines for a week. All with our old trailer. Yes it is tight in the campgrounds and the roads are lined with large rocks. It is also dry camping so ration your fresh water accordingly. The generator run rules are enforced. It is a stunningly beautiful place to stay. The hiking trails and waterfalls are amazing. What campground and site did you get?