It's... fine. I'm not really sure what I was expecting, but this has been a questionable item on my bucket list since the first Harold and Kumar movie. Being a west coast girl, this was adventurous fast food cuisine for me. Turns out the hamburgers taste pretty much exactly like the microwaved versions you buy in the grocery store. The chicken rings taste a bit like breaded shoe leather, definitely don't bother ordering those.
There can be a a significant wait to get your order, and the dining area is suffused with a quiet, desperate sadness, so if there are no available tables, go get (a lot) of drinks elsewhere and try again later.