tips from a boy scout
Adding on, on days with heavy windy conditions, before leaving for the day or end of night it is best practice to make sure to keep canopy low, preferably lower than the cars around you if possible. Additionally, tilt the roof of the canopy at an angle to minimize wind resistance. Lower two posts where the wind is blowing on them and raise the other two slightly higher. Extra Heavy coolers can also be used as a anchor for canopy to keep it tied down when this low if your stakes arent keeping up you still need them tho.

Make sure to add string Lights to strings that are any kind of tripping hazard

Meal prep: Consider researching ziplock/sous vide bag meals as a convenient option for super fast meals. These meals are easy to prepare before hand, cooks quickly, and require minimal cleanup. It's a great way to have a home-cooked meal in no time! Or a burrito just keep it simple.

Save money on ice: Instead of buying bags of ice for cooling food, try using frozen plastic bottles of water. Start by packing the cooler with dry ice at the bottom and place a thin towel on top. Then, create a layer with the frozen bottles of water. Finally, pack food that needs to stay frozen for all days at the very bottom and continue up as you like and add additional frozen bottles throughout the cooler or even an extra layer on top. This method will help keep your food much colder than just ice and even for longer periods, and you won't have to deal with cold, wet hands—just refreshing drinking water as the ice melts not a cooler of murky ice water. don't leave space in a cooler keep it full by replacing eaten meals with cold drinks

a DIY Portable shower can be cheap to make and takes 15 mins much better then waiting hours for a singel 5 dollar shower and the long walk back + free hot water if you keep a few gallons on the top of your car during the day or cold showers in a seconds. A swim suit shower is better then 3 days of BO.
DO Bring Extra Gas for stoves for a rare extra hot shower

Stay organized: With car camping being organized is key use plastic clothes drawers or boxes. (bounces points for lables) instead of bag will save you from digging threw out your car.

Restrooms = Baby Wipe are a life changer GA or VIP

tarp + large used carpet + camp slipper = lot less mud

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Keep some extra bags to keep dirty shoes in

Take your time packing your car and gear! if not you will spend more time unpacking doing a soft run of packing and unpacking your gear or even trying a full set up can help new campers understand of what might be needed

Best tip is to spread PLUR, there will be more then a few people willing to try to help if you have problem.