If you buy a season pass (even if youre going once, its better!) Just expect to spend around $25-$30 per adult and like $20 per child, and I think babies are no cost. So if you bring around $250 you should be good, with some extra for spending.
Call them and ask. They made you buy a season pass. It is actually buy the day and get the rest of the year for free, plus you get into the California State Fair for free. The State Fair starts on July 13.
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