See the Robin Williams movie
RV before you do that.
Sometimes art imitates life. In this case I have some friends that had a
worse time than those in the movie. Their trip ended up with a rental car ride home from Kentucky and a lawsuit. The RV crapped out and pretty much ruined the vacation. Before my friends had their nightmare adventure, I looked into it also. The cost of the RV was insane. I'm sure it makes for a good story, but I'm thinking sun, sand, sailing, scuba, and lots of relaxation. I'm pretty sure it costs less and has less of the very strange drama/boredom content.