I don't think any place that has a menu that looks good, is located in a park or resort that works with your touring plan, is something you want to try, or has availablity, is a waste!
We enjoy Prime Time. We also really enjoy Sci Fi. While both of these places don't have some of the more expensive items other places around WDW may have, I sitll think they are both very much worth a ts credit. And I find the atmosphere at both so much fun in a way only Disney can pull off.
If you are paying OOP, as others have said, there are some items like the fried chicken that are great for sharing!
Give it a try and see for yourself!