I'm pretty sure you can pare down your time spent at the store.
I spend approx 30mins (45 mins max). I'm in. I'm out. I have a list.
I don't do coupons (took too much time unless it's super special).
I buy off brand. I buy cheap.
We used to go Costco every 2 weeks. Not since it got more expensive.
We only go there for certain major savings: diapers, specialty items, bulk
items (biscotti @ xmas time etc.).
I ALWAYS bring a list.
I shop by aisle.
You don't have to be a major meal planner. You can make it simple like: taco Tuesdays, Weiner Wed (it can be hot dogs, sausages or rice & sausage), Fish Fridays (fish for you & hubby, fish sticks for the kids), Thai Thursdays. Otherwise, I decide in morn & defrost some meat. We have some meatless nights too!
I watch the cooking shows & get ideas from there if I'm stumped.
I stock my pantry w/the essentials: bread, tortillas, canned veggies when in a pinch, fresh veggies whenever poss, noodles of all varieties, spaghetti sauce, alfredo sauce, tortellini, steak/fish/pork chops/ground beef in freezer.
Again, you don't HAVE to meal plan but it does make things easier. Sometimes I get an idea when I watch the cooking shows in the morning & make "spin-off" or just get a hankerin' for something during the day. Do it that way if you hate planning.
As far as groc shopping, always have a list w/you, make sure you have essentials at home always: cereal, bread, eggs, milk, pasta, sauce, bread crumbs, tortillas, spices, pizza ingredients, froz chicken, froz ground beef.
I USUALLY make: tacos, spaghetti, hamburgers, steak.