I've been here three times. What I can tell you is that the quality has gone downhill over the past few years while the prices have shot up through the roof.
Rockne's is not the place to go if you're on a diet. Their fries looked like they were dipped in lard then thrown into a grease cooker for an hour. Quite honestly, they were the greasiest fries I've ever had - and they also took up 3/4 of my plate. The main dishes I've ordered here are not bad, although they also follow the motif of being extremely greasy, generally speaking.
I've never had a complaint about service or beer selection, though. For a bar employing mostly college students, this place isn't that bad. They're courteous and are quick to assist you.
Just remember that if you come here, expect to go shopping for new clothes soon.