From Dino: http://www.nps.gov/dino/planyourvisi...&PageID=511628
Read and essentially memorize the "required equipment" section.
The life jacket thing they are sticklers about... Our pod of 9 kayaks and 5 rafts had to have something like 26 pfds last week... And they wanted to see ALL of them.
A fire blanket is absolutely required under your firepan as well.
Also... At split mtn ramp, the ranger got grumpy at us for having more than ONE car at a time to derig boats. I didn't know that rule until he was mad at me for it.