The food at IHOF is pretty standard. Good, but not necessarily worth coming for. However, the options and the combinations you can get make it all worth it.
Last time I went, I was starving and feeling a lot of different cravings. I ended up getting a side of hashbrowns and the Hawaiian fire chicken. Not a combo you can get anywhere else that I'm aware of, and the waitress was kind enough not to give me a weird look. The hashbrowns weren't crispy, but it hit the spot. The fire chicken had a nice flavor, but it was nothing special. My s/o got something off the Mexican portion of the menu, which he really enjoyed. We also saw these ladies get salads that were HUGE and very intriguing.
The place is large and clean, and tables are nicely spaced out. It seemed like quite a number of people were there with coworkers, some even seemed to be in a lunch meeting. The service was also pretty fast--i was able to get in and out in about 35 minutes. They also have a private parking lot with ample spaces.
Definitely a good place to go if you're in a larger group and want everybody to be happy! Plus, breakfast is served all day :)