We've been exploring ways to immerse yourself in Mars without having to sign up for an experimental one-way space trip. You can, but you can also put yourself in Curiosity's shoes and take the rover for a crater ride.
NASA's Explore Mars: Free Drive online experience puts you in command of the rover in a virtual version of the Gale Crater on Mars.
It's fun to watch the rover's wheels react to the landscape. I made mine do doughnuts. There are plenty of points of interest available for exploration, including the landing site, a series of fractures, a canyon, sand dunes, and a phyllosilicate trough.
At one point, I thought I had discovered life on Mars, but it turned out it was just my cat standing in front of the screen. I would suggest setting your kids at the controls and telling them to go look for Waldo.
Explore Mars is in beta, but I didn't have any issues with using it other than waiting for the terrain to load a few times.
It's easy to let the minutes drain by as you race around the Gale Crater, getting just a smidgeon of an idea of what life is like for Curiosity so far away from home.