Northeast ohio to Yellowstone

Thank you everyone for taking the time to post a response. I sill haven't figured out the return trip completely. I will repost as soon As i do. I know the time isn't ideal but unfortunately I'll never have a better time. The company i work for is on the verge of closing or relocating the rest of the jobs to Mexico. If or when it closes ill have to start over at vacation time . I will actually have 21 days off but trying to be there and back in 19 just to have a couple days to relax when i get home or a day or to extra in case something goes wrong / breakdowns. My kids are 9 and 12 years old. The time is now and god willing it will happen this summer. Do you think i will be ok if i try to book the campsites in December ? I hate to book everything until i figure it all out ? Or should i at least book fishing bridge now .... it seems like that is the one that everyone says books fast.

Also the chuck wagon show looks great ! On are list now . Is there anyone that would recommend a campground in gt Jackson hole area. Seems like reviews are mixed in that area. I really would like to reserve ahead of time and most of them do not take advanced reservations.

Thanks you