From The Orpheum's website (list needs to be updated):
Colori Kitchen (recommended) not on Orpheum's list.
Call ahead for RSVN 213-622-5950 and BYOB.
429 W. 8th Street, 3- 4 doors east of Olive.
Can recommend other restaurants if you set Picky Eater parameters.
hmm, well, I don't really like Ranch, myself (I'm picky, too, I guess). But, if you want basic, close to Orpheum and that's open on Saturday night: CPK, Daily Grill, Liberty Grill, Casey's, Pete's Cafe, and The Restaurant at The Standard.
Although, I must say, I am not a fan of any of these places, but if I had to pick one I would say ... The Restaurant at The Standard. But, I dunno if they have Ranch.
Oh, I know: The Redwood Bar & Grill. It might be a little further away from the the others, on 2nd Street btwn Hill & Broadway, but I've had decent burgers, salads, fish & chips there. http://theredwoodbar.com/Menu.html