It's my least favorite SW film by a country mile...but the prospect of seeing all those killer battle effects in 3-D has me tempted to go. I saw TPM 3-D so I might as well see Episode III...unless 3-D ticket prices skyrocket in the next eleven or twelve months, in which case forget it. The 3-D experience can be cool, but is worth only so much money.
Seriously, how could AOTC be worse than TPM with Jake Lloyd and Jar Jar Binks?
Sit down and rewatch it. Take a good, deep analysis of the film. If you do you're likely to see its weaknesses and that it's actually an inferior film to Episode I, even if not by a whole lot.
But hey...that's just my opinion. Your mileage may vary.