Sierra Rizing is a good option for breakfast foods and coffee on Saturday morning. There are lots of kid friendly items (smoothies, bagels, etc.).
If you are looking for an adult and kid friendly lunch spot pre wedding, Troublemakers Beer Garden is a good option. This spot (formerly Marcos) was recently redone and there was even an airstream with ice cream. Coloma starts waking up from raft boy manatee hibernation in early May, and so at the time of this posting I do not know their hours but will update soon.
If you are looking for a playground in order to tire out your small children and facilitate an early nap, Henningsen has a great playground set up!
This is another great option for lunch on Saturday. They offer a variety of deli sandwiches and a wide selection of beers to enjoy while you wait.