we bring a lot of food that doesn't need to stay cold like crackers, peanut butter, chips, snack type items, a lot of drinks. We usually just go for one night so don't have a lot of food and usually isn't that healthy either as we usually roast hotdogs over the fire, have chips, smores, and bottled waters or soda to drink. Frozen hotdogs work well in a cooler because they will stay cold longer and the ice won't melt as fast if most of your food items are frozen in the cooler. For breakfast use cereal bars, granola bars or something like that, bananas but you want to buy the ones that still have some green as they will turn in the heat and be good the next morning. If you have hamburgers you probably want to cook them the first night as they will get soggy if sitting in melted ice overnight.
Put all food and food utensils in a cooler or keep in your car overnight. Raccoons like to get in the camp and will check out everything. We use a screen tent over the picnic table but those varmits will go under that screen and play with anything that is left out. I heard one playing with the spatula and spoons all night clanking them around and sniffing at the stuff that we didn't have put away. Luckily I had all the food put in the car before we went to our tents for the night but didn't think the utensils and extra soda cans that weren't in the cooler would be a problem, well after a while I got up and went and scared the coon off and put everything in the car so there was nothing for the coon to be curious about and I could get some sleep. We have also took our gas grill along with us if we wanted to cook real food and used the side burner to make noodles or other stuff you would cook in a sauce pan. Most of the time we just have hotdogs for camping meals as we don't eat them often at home so it is a treat for the kids and a lot simpler to pack. Peanut Butter and Jelly sandwiches are also good to take especially if your kids get hungry often and can be a more healthy snack. We don't like to pack a lot of dishes so anything that can be made quick over a fire and finger food type stuff works well.
One thing we do for washing hands is we have a big orange jug full of water and have a bottle of liquid soap next to it. We have a bowl sitting there and put a little water in it at a time--just enough to cover the bottom and you want a bowl that the palm of your hand can touch the bottom of the bowl so a nice size square or rectangle one works well or a small bucket. Put soap on your hands and rub together then swish them in the bowl of water until the soap is rinsed off pretty well then dump the water. That way you don't have stagnant dirty water sitting there and everyone using the same water all day, plus the water gets dirty pretty fast when kids are playing and fishing. We are usually at campgrounds where the water spiket isn't close to our camping spot but there is one available and is easier to fill the jug when needed than to go to the spiket everytime you want to wash your hands. Hand sanitizer is ok too but most of my family has problems using that stuff as it all has alcohol in it and burns or cracks and dries hands out so don't want to use it all the time. I prefer soap and water over hand sanitizers.
To keep your tent clean put a carpet mat in front of your tent and have a chair close to the entrance and everyone takes off shoes before going into the tent. You will be amazed at how much dust, mud, grass gets tracked in and isn't easy to clean out and definately not fun to sleep on if people are walking in and out of the tent with shoes on. Having to take off shoes also deters kids from wanting to run in and out of the tent constantly and helps keep the bugs out the more the tent is closed up. We also spray bug spray on the screens when we set up the tent to keep mosquitos out of the tent. Don't let anything touch the sides of the tent including luggage, pillows, sleeping bags or you will be wet in the morning even if it isn't raining, the dew will seep through. The tent will stay dry if nothing touches the sides.
Have a great time. It is a fun experience if you plan well and have stuff for the kids to do and don't expect them to stay clean. Dress them in grubby play clothes and let them play in the dirt and have fun. We always camp on a lake and our kids love to fish so they are pretty content fishing and we take books to read and is nice and peaceful to read a book with the sounds of the water in the background, very relaxing.
Take your playpen or pack and play for your 14 month old and toys that wash easily.
The best bug spray is the clear spray bottle. It is OFF with 99% deet. The other spray cans with less deet in them don't work that well but are very stinky so if you are going to smell like off then get the good stuff and it does cost more but works a lot better. If you know someone that sells Avon the skin so soft bug repellant lotion works well too. It is also a sunscreen. It is a little pricey but doesn't stink as bad as the off and is working for sunscreen too.
Those are some camping tips I have for you. Sorry it's so long.