Unless, the only Chinese food you eat is not completely authentic, is fried (like Spring Rolls and Chicken Balls, which aren't authentic Chinese Food anyways), is spicy (like Shezuan), has Mercury (like Shark Fin's soup), etc... use the caution for everything you eat.
The Hollywood Bowl concert season usually runs from June into late September or early October. Most events at the Bowl are produced in house, but there are also Lease Events, which have different arrangements for parking and different rules for picnicking.
Most of the seats at the Hollywood Bowl are slatted wooden bench seats with backs. It can be a tight squeeze in the benches with people bundled up against the chilly evening and carrying all kinds of picnic gear. Cushions are available for rent, or you can bring your own.