Having never seen the movie (which is another problem with basing a ride on a film many are not familiar with), it does come off as a cheap attempt to fulfil the "racing" promised by the pre-show. Then there's the way they jam in the last few gates. It feels like they realized they were running out of track and didn't want to go back and respace the earlier gates.
On top of all that, the indoor portion is neither visually interesting nor thrilling. The launch is fun, but then they immediately put on the brakes and provide very little else of worth. The outdoor portion is ok at night, but again, that section is very short.
I didn't expect to be emotionally connected to the story having never seen the film. Similar to my expectations for Flight of Passage, where I did see the film but did not like it. But unlike FoP, Tron the ride just does not stand on its own at all.