The CGI in LOTR was excellent. My wife and I recently rewatched it, and I thought it aged rather well - because it was used very sparingly. There's a few scenes (Pre-balrog Moria, most the battle of Pelennor Fields, The Paths of the Dead) that look quite bad, but they are few and far between.

The Hobbit, on the other hand, was awful. Way too much bad CGI. (Never mind all the other problems with that adaptation.)

And in my mind, the theme park ride started as soon as the dwarves were captured by the goblins, with the mind-blowing minecart sequence. I did not realize I was paying $14 to watch "Goblin Snuff Amusement Park Expert Swordfighter Drunken Master Ride: Part I, The Enpartening".