is this doable?

We are coming to So Cal for DH's Marine reunion at Camp Pendleton.

The deal on the flights has us leaving from Philly & flying to Ontario then returning home via John Wayne, SNA.

We would arrive at mighnight Thursday going into Friday & plan to sleep at an airport hotel b/c our bodies will think it's 4 a.m. We'll pick up a rental car the next morning at the AP.

Friday we want to get up & drive 110 miles along I-15 to San Diego to go to Sea World or the Zoo. We'll get a nice hotel in San Diego for the night.

Saturday morning we'll drive back up to Oceanside for the reunion & spend Sunday at the pier which appears to be the only thing to do in Oceanside.

Monday we fly home from John Wayne.

Am I nuts? Is this too much driving?