I haven't watched this Changing Lanes video (yet), but given the title, Yellowstone National Park [Where to NOT Stay], it may be pertinent to you:

We are scheduled to go to YS and GTT during the same time period. Seems that the Changing Lanes folks worst experience was staying in the Cabin and we have no need to stay in a cabin. We are taking their other negative experiences with a grain of salt and will proceed with caution as the other MILLIONS of visitors more positive experiences over the years kind of balance things out, at least for us. My best advice is to watch the video all the way through before making your decision.

Be prepared for enormous crowds, even this year. By that I mean have patience and enjoy where you happen to be at the moment.

We were there last summer. I agree with trying to stay I the parks at least a bit, to have more hours of fun and less of driving. Stars and evening animals just aren't the same any other way.

I love that area. I took the family camping there a while back. We use tents back then. I would like to do it agin but in a nice camper.

We have visited Grand Teton and Yellowstone many times. Since your trip this year is postponed, I suggest you gain some experience camping without full hookups. There are a number of beautiful rv sites in both Grand Teton and Yellowstone but very limited full hookup sites (only one in Yellowstone is Fishing Bridge which is closed in 2020 for renovation). Keep in mind that most of the campgrounds have water available and dumps at least for grey water. A generator for recharging batteries is a great investment. IF you decide you can live without full hookups, several of the campgrounds within the parks have limited sites that are reservable. In Yellowstone, Madison is probably the most centrally located to most of the attractions. IF you cannot live without full hookups, Flagg Ranch is most accessible to both parks however, it is very expensive and when we made the mistake of staying there several years ago (only because we had family members joining us which required a full hook-up site). we were not impressed with anything in the park. It was very outdated and even though it offered full hookups, everything was antiquated. As another respondent mentioned, July is probably the worst month for visiting the parks. Not only are the crowds (and subsequent vehicle traffic) at the highest, wildlife have headed to the high ground to get away from the tourists, so wildlife viewing opportunities are much more limited (and the wildlife are harassed by the idiots that park in the middle of the road, leave their vehicles and chase the wildlife. Our favorite months for visiting the parks are mid-May and Mid-September. The wildlife are still close to roads, lots of cute babies to observe in May, and bugling bull Elk to listen to in mid-September. Not to beat a dead horse on the idea of dry camping but when we started rv'ing over 40-years ago, we didn't know there was any alternatives to full hookups. Now, we carry a small generator, a 5-gallon water can, a 5-gallon "dump bucket," take GI showers, and other measures to minimize water/holding tank usage. We can easily camp without hookups for more than a week, even longer if water and dump facilities are available. Good luck!

Thank you for this great information. We finally used our camper for the 1st time, and loved every minute!! I am definitely open to dry camping. So is Madison your preference? What about a preference in Grand Tetons? In checking reviews I've seen Colter Bay listed as a top site. Do you recommend any others? My only concern with May or September would be road closures or not having full access to both parks. Was that ever a problem during those Months? We are planning our first few trips close to home, and then want to head out of state if things are opened up by July. Thanks again!!

Sorry for the delay--building an rv garage for our new Imagine. Madison and Grant Village are more centrally located to the major attractions. Our preference is Mammoth as we spend most of our time watching wildlife in the Lamar Valley. We live only 50-miles from Grand Teton so only make day trips there. All the campgrounds there are nice. Weather can be an issue in early May. September generally has no weather problems however, as I say that, we had snow here last week. Last year we had snow in late August but nothing sticks on the ground. Good luck. Oh, in your dry camping "kit" include a funnel for pouring water into your tank, and a "Hose Thief" which is a device that slips over a "smooth hose bib which is common in many Forest Service campgrounds.

Inside Yellowstone Nat’l Park, Fishing Bridge campground is the only one with full hookups AND you can make reservations there. Fishing Bridge the bridge is bridge over the outlet of Yellowstone Lake, which is the start of Yellowstone River. The campground is is reasonably central for day trips to the various parts of the park. We were there in Early June 2016 for 2 weeks. Some hot days and some cold nights. Main building has laundry and hot showers available. We understand they may not be open this year due to problems of getting needed Covid supplies so they could do some remodeling or something. We had made our reservation about a year in advance. So check now for 2021. Enjoy all parts of the park.

I cancelled plans for this year due to Covid. Have already made reservations for 2021 in mid-June. As said, Madison and Grant take reservations. No hookups and max length of 30' for trailers. BUT.....you are in the park and do not have to wait in lines in the mornings to get in. The reservation dept said they are not taking reservations for Fishing Bridge for 2021 yet. If opened, it will be later in 2021 summer.

I'm using Coulter Bay in GT and they do have hookups.

As was mentioned above, a small inverter generator will work great for dry camping/battery charging. I have a Honda EU2000 but there are ones much less expensive nowadays. The private CG's outside the park are insane on prices in my opinion. If you were staying a week you could pay for a generator with the difference in CG fees.

Thank you for that information. We have decided to go in September instead of July. I know the weather could be iffy, but shouldn't be as crowded.

We are going to keep checking for Fishing Bridge as have changed our dates to the first of September. We may make other reservations that can be cancelled if Fishing Bridge happens to open up. Thanks for the info!

Looks beautiful! I will definitely check it out.

Thank you for the info. There seems to be a lot of things we still need to learn about our camper. We've only used our camper 3 times too far. Just returned from Clifty Falls State Park in Indiana near Madison and the Ohio River. Little park but beautiful and well kept. They have 10 hiking trails. Due to it being the dry time of year the falls, which you will pass on various trails, were not running very much but still very beautiful! I highly recommend it to people who like to hike!