Should campgrounds in rock creek canyon be available this weekend?

[yztim]

Heading to RCL tom. am. Most of the campsites are nonreserveable. Is it early enough in june to be fine? Any recommendations of nice sites, i cant find a map of all of them, just the reservable ones.
getting pumped to go!
tim

[SierraPeaks]

You'll have no trouble finding a campsite in Rock Creek Canyon...trust me.