10 day holiday in US

[Leo]

Hormone & antibiotic free beef is a bit of a niche product in the US, and roast dinners aren't common,

 

[Cervelo]

and got a piece of bog standard beef roast. It was over almost $100 for 2kg.

And in America "Ribeye" is in no way ever classed as a " bog standard beef roast" quite the opposite
And though $100 for a 2Kg would seem extreme over here where you'll pay €12/15kg, its a completely different market over there especially when you not only factor in the as Leo says "Hormone & antibiotic free" but also the grass fed vs the corn fed beef

 

[Purple]

Good quality food is very expensive in the US. It has a highly industrialised agricultural sector which has low quality and animal welfare standards. You just have to accept that you are going to have to eat badly or spend a fortune when you are there.

 

[JoeRoberts]

With a family, an RV would be a good adventure and get you to areas you may not otherwise go to.
V good campgrounds/state parks and you can cook your own food. Nashville not suitable for country music with kids as all bar based music and they won't get in. Best to seek out a bluegrass festival and bring the RV there. Most themeparks also have a campground nearby too.
Have used both ElMonteRv and Cruiseamerica before and good companies to deal with.
Dollywood is a good spot with plenty of music in surrounding areas.