I decided to give this place a try today, and all in all, I'm happy I did. I can't speak to how authentically Hawaiian this may be, as I've never tried any Hawaiian food before, but I enjoyed the food. I chose to go with the barbecue beef. I think my meal was about $9, and that included a fairly generous portion of the beef, two scoops of rice, and their potato salad. I thought everything was delicious! I loved the sauce that the beef and rice were drizzled with, and the potato salad was unlike any I'd had before - very tasty. There was some fat on the beef, but not a lot.
I would give this place 4 stars if it weren't for the prices... I just thought $8.50/9ish dollars (before the drink) was a bit high for what essentially amounts to take-out lunch. I'd feel better about it at a $6 or even $7 price tag.
I had seen this place get some poor reviews elsewhere, but the people doing the reviews sounded like picky eaters (no offense meant) to me. I should probably start putting a disclaimer in my restaurant reviews that I'm not that particular, so picky eaters should take my reviews with a grain of salt! ;)