We've only been once. That was enough, really. We didn't hate it, but I doubt we'll ever return.
The food was okay, the service was okay, the portions were large. The place is way too small for all the tables they try to cram in there though. It felt like we were at a table in the middle of an aisle, as there were rows of tables on either side of us, with the tables for two down the middle. (That's where we were, at a table for two.) The 'aisle' was so tight that servers going past our table kept bumping into us and our plates, which were so large they literally hung off the sides of the table. It was the most unenjoyable meal of our entire trip, any trip.
Again, the food and service were fine, nothing special, but adequate and acceptable. We just didn't like being jostled during our meal and having to keep grabbing our plates to prevent them from being bumped right off the table. Plus, it was so loud we could barely speak to each other. That I could have dealt with though. After all, we like Sci Fi, and it's also loud with tiny tables. But at least at Sci Fi nobody is bumping us or our food while we're trying to eat.