I feel like the thing about judging a restaurant is that you have to take it for what it is. Eat'n Park is not a trendy or "New American" restaurant or gastropub. If you are looking for a restaurant with an artful aesthetic, beautifully and creatively presented food, and fresh and locally sourced ingredients, you came to the wrong place.
However, what you do get out of Eat'n Park is very friendly and efficient service, a large menu with a ton of options, very reasonable prices, awesome late-night hours while most other places are closed, and being able to use college dining dollars (for CMU students) to pay. All in all, EnP is a very solid choice when looking for inexpensive food after a long night.