There are many options for food in DTD! In my opinion, there is no restaurant that consistently lacks in quality. It really depends on your mood. For example, if you are looking for something kid-friendly, colorful, hectic and fun, try Rainforest Café or ESPN zone. If you are looking for something fancy and elegant, Catal is great (they serve Mediterranean food). Other options are House of Blues, tortilla joes, Naples, Napolini, La Brea Bakery Café, and of course, Ralph Brennan's Jazz Kitchen. Based on what you said, I would think that that particular restaurant would be your best option.
Now it is true that the quality of the food of Ralph Brennan's jazz kitchen has declined a little throughout the recession. Although it may be weaker than before, it really isn't all that bad. If you have never been, and you have nothing to compare it to, then you should be fine! If you do not want to risk it, try Naples?