I'm not a Family Guy fan. I was told, "It doesn't matter if you're a FG fan, if you're a Star Wars fan, you'll love it! It's hillllllarious!" (Something I might say about the Robot Chicken Star Wars spoofs).
I found it neither hilarious nor something deserving of my love. The first one I would summarize as: "Star Wars, but re-enacted with Family Guy characters and maybe 5% more jokes, none of which I found to be very funny." I haven't seen the 2nd one, but I heard that it was less of a re-enactment, and more of a spoof. That's probably better, but since I don't like FG sense of humor, I can't imagine I would enjoy it. So I've skipped it.