If you have time, hit the beaches. I recommend Dana Strands, especially if you can go during the daytime on a weekday. There's some free parking, and it is smaller and more isolated, which has meant smaller crowds when I was there, and it is a nice-looking area. A lot less riff-raff venture up there as well, from what I could tell. There's also a nature trail that takes you to the actual Dana Point (where ships used to load from the cliff, and the incident involving Richard Henry Dana occurred in the 1800s), although it is only open on some days (not on the day I went, sadly). The trail can also take you to the other side, IIRC, where there are some nice restaurants and a marina, at which a Tall Ship is usually docked. If you're going to be that close to the coast, you gotta hit the beach if you can.