I'm comfortable leaving stuff in my car at the Long Beach ferry terminal. Can't guarantee that nothing will ever happen, but it's an acceptable risk IMO. Just don't leave anything tempting in plain sight.
One thing I've reluctantly stopped doing is dropping off my stuff unattended at the curb before entering the parking structure. Someone recently had their gear stolen that way; it was all over the FB groups. It sucks because even the lowest parking level is half a flight of stairs up from the street, and there's always a long wait for the elevator. Also, someone recently had a computer stolen at the dive park, which is really disheartening; people have long felt comfortable leaving their bags with wallets, cell phones, etc on the benches around the casino while diving. Another reason to get a hotel on the island-- you can leave your valuables in your room.
One thing I've reluctantly stopped doing is dropping off my stuff unattended at the curb before entering the parking structure. Someone recently had their gear stolen that way; it was all over the FB groups. It sucks because even the lowest parking level is half a flight of stairs up from the street, and there's always a long wait for the elevator. Also, someone recently had a computer stolen at the dive park, which is really disheartening; people have long felt comfortable leaving their bags with wallets, cell phones, etc on the benches around the casino while diving. Another reason to get a hotel on the island-- you can leave your valuables in your room.