After spending days in French Camp for Rocktober last year, agree with Retired. Would prefer French over Iris for sure. I think you are smart with reservations as I have gone in the past to find no decent spots in the whole canyon. And that was tent camping. Way harder to find spots to fit a trailer on the get go. Especially up there if it is larger then 24 feet.
With East Fork not open, that will have a major impact as its the biggest camp up there. Pine Grove and Upper Pine will also create more impact also.
No matter, it will be good for you as you will be up there, and I will be at home!
