I found this thread while researching another trip.
I started a forum a couple of years ago in RV.net; RV.Net Open Roads Forum: Another Grand Circle Planning forum!
Here is an excerpt from my trip report on our time in Zion. I might add that taking our 29' fiver through the tunnel was a piece of cake. You will see in one the pics in my slideshow how traffic is backup waiting while they 'single lane' traffic. And you can see the big ole tourist bus coming through as well.
We arrived in Zion on day 2 in time to set up camp, walk around the visitor's center and check-out the shuttle bus schedule for the next day, and have a nice relaxing dinner.
On the first full day we got out early and spent the whole day riding the shuttles and getting off and checking out each stop. Very cool way to see the park.
The next day I got up at 4:30am and went to the museum to get pics of the sunrise on the Towers of the Virgin.
We had read the best way to enter the park is from the east (more impressive views for a first timer), but that was impractical for us, so instead, after I got my sunrise pics, while the DW went for a long walk, I drove all the way out of the park to the east, turned around, and came back, stopping countless times to take pics along the way. On that day alone I took 643 pictures.
Here are just a few pics of our stay in Zion; click Here. After the link opens select Slide Show, and then in the upper right select Full Screen. http://share.shutterfly.com/share/re...0EZOXDlo2csWcf