Drive up and down PCH with stops in Laguna, Crystal Cove and Newport/Balboa.
Hike to top of the world at Aliso and Wood Canyons Wilderness Park.
Eat some fresh fish at
Bear Flag Fish Co., hang out at the end of Balboa island and watch body boarders/surfers by the Wedge. Or get good Japanese food in the Bristol St area of Costa Mesa.
Rent a duffy boat or kayak and cruise Balboa harbor.
Shop at South Coast Plaza or Fashion Island.