It depends where you are. LA is a huge sprawl. Venice has 2000 homeless and it can be disturbing. But for a quick visit, LA will probably seem like the same old place it's always been.
Where should you eat? Very close to where you'll be there is a kabillion right answers. But Friday night and Saturday if you want to go to a good restaurant, it will be busy and there will be lines. Reservations are a good idea and don't be frustrated if you still wait. Door dashing or uber eats-ing something to the hotel might be my choice, but I've lived in SoCal for 50 years and grow weary of the scene.
JW Steakhouse at the LAX Marriott does a nice job. It's a chain and for me has been a convenience because that's where I stay when using the airport. Love the pool at midnight. Sausal is my pick (near the airport) for a great LA Mexican meal. When in LA, eat Mexican. I don't feel like googling, but there's an Italian place... googled it...
Jame Enoteca, what a name. I've only been once but it was fantastic. Vodka suace spicey pasta and a braised and glazed pork shank. Lots of sharing at the table, everything great. Small strip mall local's spot with enthusiastic loud crowds and long lines, but worth it. I recently had lunch with an old buddy in Hawthorne, very close to where you'll be. He is Iranian and swears it is the most authentic Pakistani/Indian food in LA, and the best. It was very very good.
Al Watan. Also smallish strip mall locals vibe. So there's a few options and varieties. I'd do the Mexican, but it's my favorite. If your wife (or you) is the type to order a big salad for a meal, the shrimp salad there is ridiculous, pistachio pesto, pistachios, pumpkin seeds... it's a meal.
Saturday morn/afternoon. I think I would avoid Venice and go a couple miles north to Santa Monica. The Saturday farmers market is one of the best in the world and a great time killer. You'll buy something even though you're traveling. It's open 8 to 1 but 9-12 is when it's best. From there it is a very short walk to what I think is the best burger in LA. Hi Ho. 100% Wagyu burgers at an amazing price. Long lines on Saturday. From there it is a very short walk to the always busy Santa Monica Pier. Another great time killer but maybe too touristy. The restaurant at the end, forget the name again, make spectacular fish tacos and has long lines, of course, but eat Mexican anyway.
Enjoy PJ. I am jealous. There should be a taxi lineup outside the Forum near the valet, if Uber doesn't work.