Just got back from our first "long distance" camping trip...took the wife and 4 kids to Colorado.
Picked up an REI Slumberjack (8 man I believe) tent last year from their Outlet mark downs.  Very easy to set up - and way more space than we need right now but as kids grow we will fill it up.
Cots too bulky in my opinion unless have ample space/trailer.  We brought one Queen blow up mattress which holds 3 kids (Walmart cheapy we've had for 5 years), AC converter for car to run air pump...2 backpacking sleeping pads for wife and I, and grabbed a $2.99 pool layout raft before leaving town for my oldest son (don't want to spoil them right away with a good pad

)  I have picked up good 0 to 20 degree mummy bags from Sierratrading post over time for cheap and those are why the kids stayed so warm and slept good...woke up to 39 degrees each morning which was cold for them coming from 90's and high humidity in IL.
With family of 6, even car camping can have limited space...so left the Coleman 2 burner stove at home that we usually take to camp and elk camp (plus it's 20 yrs old and not the cleanest thing).  So just brought my mini Kovea (like a pocket rocket) and my kids got to try their first Mountain House, Hot Chocolate in the mornings along with some backpackers pantry Cinnamon Streusel oatmeal.  Kids enjoyed it all.
Caught our first trout also on this trip...and cooked them and some hobos (burger, potatoes, carrots) all in foil sitting directly on the log fire.  Again, tasted great and kids like playing with fire as much as dad does.
Chairs are a must for sitting comfortably around fire.  A couple LED lanterns are great for dark time in the tent and outside...and headlamps are preferred as well.  One good light was needed for shadow puppets inside the tent at bedtime...some of our hardest laughs of the trip.
So to summarize, just like hunting you can go all out - or just need a tent, bags, sleeping pads, lights, firewood/lighter, some foil to cook and chairs...and the kids seem to have a ball (and forget all about the electronics for a bit)