I went solo on a previous trip (accompanied by a CM so I wouldn't have to go alone) and loved it. Although it's a little pricey, I'm planning to take the whole family on our upcoming trip. I think the attraction lasted about 20 minutes once you actually enter the maze (there's also the "pre-show"/registration and suiting up that takes some time), which sounds a little short for the price, but the experience didn't feel to me like it was short-changed. It had a good pace and story line with what I considered to be an awesome finale. Overall, I felt it was worth the cost and am willing to pay for it again (x5).
It's really immersive... objects are not just images, they are physically there. When you see a droid, you can reach out and touch it. When you grab a blaster rifle from a rack in the armory, it's really there. Effects such as real heat, vibrations to simulate moving vehicles, and actually being hit by the laser blasts all add up to make this a great attraction!
I was worried before going in that it was like a laser tag contest/video game and asked to make sure getting hit by the lasers wouldn't cause you to "lose" the game. It doesn't. With that in mind, I did some dodging and weaving to avoid being shot but, to be honest, getting hit was fun to experience too.
If your kids are Star Wars fans, I would highly recommend that one. I haven't done the Wreck-It Ralph version. I'm sure it's entertaining, but I can't imagine it having the same "wow" factor, especially if someone is a SW fan. That said, if it's more geared toward "Slaughter Race" and less "Sugar Rush," I could see it appealing to older kids.