[getbak]

Early December is a great time to go. Crowds are pretty much non-existent in the dead zone between US Thanksgiving and Christmas. Disneyland gets busier on the weekends, but mid-week is perfect.

All the Christmas decorations will be up all over the parks and pretty much nothing will be closed for maintenance.

Your two year-old will probably be too small for the more adventurous rides, but the five year-old should be big enough for most of them. If your five year-old is interested in going on rides and both yourself and wife want to go too, look into doing a parent-swap. That allows the whole family to go through the line together and when you get to the front, one of you takes the older child on the ride while the other parent waits with the younger child. Then, once that ride is over, the parents trade places and the older kid gets to ride again.

Single rider is also an option if only one person wants to go on a particular ride, although with the crowds in December, you likely won't save much time over just going through the regular line.