BWT - would like to have a little more info on the fam to guide, as well as length of trip and where you are located at.
But from a fam of 5 with a travel dog that makes six...
Best historic trip Gettysburgs and DC area.
Get an official tour guide from National park service. If you can do over 4th of july, you can walk the battles the day it happened some 152/153 years ago. we did 150th anv and it was so cool. Also the reenactment outside of town is worth the time, effort and money. If camping Artillery campground in gettysburg.
Just hanging, living and being an american.
Gulf shores AL, 4th of July. Catch the Blue Angles in Pensacola FL. Great beaches, kid friendly, lots of things to do, houses to rent, places to camp..... You can make it as much go go go or laid back as you want. A must stop is the Hang Out. Also I recommend ordering food/dinner from the bar and finding place to sit and eat at most local places. Beat long wait for table in summer. They also have some big festivals/weekends.
Yellowstone/Tetons & the surrounding WY/MT.
There are three places to stage for this inside yellowstone. Then west yellowstone and Cody, WY. I would HIGHLY recommend Cody, not only that my inlaws are from there, they also have one of the best small town 4th of july padres and weeks in all of the USA. There is a summer long rodeo, which is a must do, the museum that has a the Remington gun collection that is out of this world. And a small town just SW called mettessee. I would try to get into the Irma hotel so you are right in the action of the 3pm gun fight on main street. There are also some dinsour activities down the road towards the middle of the state. You can also go the other direction and trip over to Glacier MT. The skiing is also pretty good as well. Red lodge, bridger bowl and big sky(if you have the $$$$)
SW Missouri during the fall. This includes fall foliage along hgwy 44 Ozarks , branson, silver dollar city(amusement park) as well as fishing. Lake Tanneycomo/bull shouls. Captain Steve Dickey(?) took the wife here and after 3 hours we caught so many fish our shoulder hurt. You may even be able to reach STL for playoff baseball game or hockey game.
Seattle/Vancouver
Best done in summer, but also could include alaska trip either by water/plane or car. Buchart Gardens Vancouver BC, Baniff and seattle/Western WA has tons of stuff. including rain forest, deserts, mountains, oceans and fault lines.
PM me with any questions
Oh Yah.... How could I forget. Memphis and Graceland!!!!!! Unnnn Hunnnnnnn. Its a once in lifetime experience!!!