Had a similar issue at LAX a couple of weeks ago almost 6 hour mechanical delay. they gave a $6 voucher to my wife and $10 to me for food. They did also bring out the drink carts for cokes and chips. A couple of days later I received 5k sky pesos in an email. The problem is rerouting from LAX to the East coast is a pain with DL. A rolling hour delay or two and then you are at noon PST, by that time most options are gone.