Most definitely do not go on the weekend. You'll be crazed and will never go again! Families make it an outing with kids running all over the place, the parking lot will be a nightmare (and that is probably an understatement), the Iines will be long to check out, and my favorites: people who stop mid aisle oblivios to the fact that you are now stuck behind them, and those who casually stroll through the store (although on your first trip, this may be you), while you are trying to go in, get what you came for and get out.
That being said, my family does not like the street tacos. We do like the quiche, Don Miguel burritos, the shepherds pie (takes a long time to cook, not a quick heat and eat meal), the pizza in the prepared food section, and the produce (apples, berries, the bagged kale/cranberry salad,avocado, peppers, and so much more), hamburger buns, also the large hummus containers, large tzatiki container, sliced cheddar, shredded cheddar (having both available to sprinkle on tacos or make a grilled cheese sandwich is convenient), frozen bags of edemame, frozen fruit for smoothies, etc.
As far as meat, I always buy a sleeve of hamburgers (in the meat aisle, not in the back by the other meat), ground turkey (4 pack), steak, and boneless chicken breasts and boneless chicken thighs (breasts and thighs come in a 6-pack, 2 large breasts and 4-5 thighs each pack). Luckily, we have a second refrigerator/freezer to fit all the frozen meat! And, I make sure to only go once a month, as there are always splurged on crap I don't really need because I think I want it.