My experience can be summed up as entirely average.
I'm not usually a big fan of chains I got a Groupon for this place some time ago and decided to finally use it. We sat in the bar area, the atmosphere was as expected, sports TVs, decent brews.
We ordered the firecracker shrimp and the sirloin steak, nothing spectacular but decent. The menu said they had a chimichurri sauce for the steak but our waitress had no idea about it. The food was served cold, might have been better had it been warm.
I probably won't be back to Rock Bottom when there are so many other (non-chain) options