Stunningly beautiful. It is worth the trip if you just take the car around the scenic drive and walk just a little around the various stops in the park. It is a definite repeat next time around and now that I have taking the loop and explored just a fraction of the ground there are a few places I would like to hike back into to see more.
Though I did not stop at the visitors center it is probably a good idea to do so in order to prioritize your time if you know you are only going to be here once. Taking the loop and spending just a little time at the stops will burn a couple of hours. However, I see how you could easily spend most of the day here even for beginners (like me) to hiking trails.