We went in May this year. It was a blast.
We did not attempt to stay 24 hours in the park.
We opted instead to spring for a night at CR, so we could walk over with ease.
We got there at opening and headed left when everyone else went right.
We had no one with us on that half of the park and we did every ride in both Adventure Land and Frontier Land, most more than once, by 8:00 AM
We hung around and did some other things till mid day and we went back for a nap.
Got back over there (in our PJ's) for Wishes and dinner at BOG. We didn't stay a lot longer after that as it started raining.
So in the end, it wasn't hugely different than our day last Sunday but we still had a blast and got to see a few different things