We are a family of 4 who fulltimes. We've talked a couple of times about a second vehicle (more economical and easier for site-seeing). But each time it comes down to not wanting to be separate from my wife on travel days. We look forward to that time together and often spend it talking.
Her in another vehicle = no way for us.
As for the campsite parking... it really comes down to the campground. You'll see all 3 options:
1) you can park it all at your site
2) you can park for free at overflow parking
3) you will have to pay a fee (either 2 sites or for storage)
