Pump It Up - Sorrento Valley
Pump it up is a fun place for the kids filled with jumpy jumps - some for smaller kids, and a few with really tall blown up structures for climbing and slides. Location wise its not right near Carmel Valley, but its easy to get to off the 805. You can see more about them here: http://www.pumpitupparty.com/index.php
This place can be a little daunting though for kids who are still timid about tall structures. Smaller kids will definitely need your assistance. And to be honest, if you have an older one and a smaller one this place can be hard without a 2nd set of hands.
I believe there are open gym times too for rainy days and also some camps, etc. Check out their schedule for that. They are great about parties helping to set up food, order it even for you and make up goodie bags.

