We've been campers for years and Acadia is fabulous. You're going to love it there. August is blueberry season so familiarize yourself with what wild blueberries look like so you can snack along the trails as you hike.
Absolutely get yourself a comfortable baby carrier or backpack if you don't already have one.
Years ago I found picnic table covers in one of those catalogs that sells all sorts of stuff. They are made out of plastic tablecloth material with a cotton backing and have elastic that runs around the outside edge. Like a fitted sheet. There's one for the table top itself and 2 for the seats. These are one of the first things I unpack and set up. They cover the seats so you don't have to worry about sitting in sticky marshmallow residue or grease left there from the last campers. They wipe off with a damp sponge and I feel much cleaner eating off of something from home. If you're handy you could make some with oilcloth and elastic.
I also try to prepare a lot of food ahead of time. We learned the hard way that the sun goes down earlier in the campground and cooking in the dark with hungry kids is no fun. One of my families favorite camp meals is chicken in gravy over noodles. I precook chicken at home (either boneless or removed from the bone after cooking), and freeze it's if a meal for later in the week. We can use this chicken for sandwiches and for the meal. I shred the chicken into a pot, add the gravy and heat over the camp stove. Cook the noodles per package instructions and when done layer in their bowl or dish. Serve with raw baby carrots or other easy veggie. There never seems to be enough.
We also freeze water in cleaned out 64 oz. juice containers and use these instead of ice in the cooler. They take up more room but are less messy and you can drink the water as it thaws.
Bring simple card games like Uno for in the tent before bedtime. You'll need a good LED lantern in there too. And flashlights for going to the bathroom during the middle of the night.
I pack everything in separate plastic bins with labels because I couldn't stand not knowing where everything was. Shoes and outerwear go in one bin. First aid in another. Clothes, extra blankets, food, cooking stuff, toys and balls. Each get their own bin. Also bring a small one for inside the tent for cell phone, wallet, glasses, etc. at night.
Someone had a great idea with the sheer curtain for a bug net. Wish I'd thought of that.
Wet ones or baby wipes are a must too. Oh, and clips for chip bags.
Now I'm excited about summer! Have fun!!
