Here in Mpls we rated a 'small footprint' Hardrock instead of the larger locations you'll traditionally see. That translates into a limited number of tables and a potential wait. But on the flipside, the food is pretty good, if somewhat pricey, and it's often a good spot to go to for lunch downtown. And you can definitely see some of their trademark R&R memorabilia, if that's your bag.
The salads are sizable, and fairly tastey, as are the burgers.