Although it is not as hot as I thought it would be, the weather is really nice in San Diego. It gets hot during the day but then it gets really cool at night like someone turned on the air conditioning.
So far, we've been to Legoland and SeaWorld. We bought a "5-day for the price of 1" pass for Legoland (online only) and a "7-day for the price of 1" pass for SeaWorld (with CAA discount). We were at Legoland for 4 days and SeaWorld for 2 days. I realize that, with young kids, it's really hard to rush them through a big theme park. Because we had multi-day passes, we were able to do the parks at an easy pace. If we only had 1-day admissions, we would not have been able to do everything in the park.
We also went to the USS Midway which is rated the #1 attraction in San Diego on Tripadvisor. We spent 4 hours there and it was worth it. There were lots of planes and helicopters on display, a free audio tour that explained over 60 stops on the tour, and simulation rides for additional cost (my husband did every one of them).
We are off to see the world famous San Diego Zoo today. We'll see if it lives up to its reputation.