I am living in Vancouver, Canada. We are going to LA Disneyland with a 25months old daughter on the 4th of June and leaving on the 8th of June.
We plan to get a 2 days pass to Disney but where else can we go and good for 25m toddler? what about seaworld (= HK ocean park?), San Diego Zoo, San Diego Wild Animal Park or Legoland California??
LegoLand is great for small kids. The kids can play lego while the adults wait in line. They have train in wild animal park but I think it's too hot in the sumer for the animal to come out and let you see them. You can also consider Knott's Berry Farm. My older dauthger loved the rides there but her friend (both of them 28 months at that time) cried like crazy.
Legoland is really great for small children and there is a outlet shopping next to it Sea World is also pretty good. I don't think SD Wild Animal Park is good for young kids.