Camping with a baby ... even 2 babies ... is no different than having a baby in your home living room! Just do whatever you do at home with your baby and enjoy camping. There's nothing special you need to do. They eat the same food, they poop the same poop ... so use the same diapers, they sleep on their own schedule ... so you're still not going to get any sleep at night if your at home or camping!
If the baby sleeps in a separate bed at home, make a bed in your camper, tent, whatever. If the baby sleeps with you, do the same when camping. It's not complicated, it's actually fun, and new babies get lots of attention at campgrounds, so be prepared to have visitors stop in just to look at the baby. Maybe that's the only adjustment you need to make.
We started our kids camping in the back of the pick-up truck and a tent. We had a foam rubber mattress in the back of the Chevy S-10 and slept in it since it had a shell, and used the tent to store all our junk. Baby went and did whatever we did!
These photos are from 1986, when our now 28 year old son, who is now a dad himself, was just a little guy! Nothing stopped us, and we did no extra provisions. He adapted because we never revolved our world around him. He revolved around our world.





And when the baby boy got a baby sister, and about 13 years later, camping was rooted in their blood!

Just be yourself and the baby WILL be fine! Have fun!