I can say with all honesty, Red Robin makes a decent burger. I think I've never had a lousy burger no matter what choice I ordered. I'd give them higher marks except for the following.....
Noise level. I don't know who designs the buildings, but the acoustics are horrid in here. It's louder than a bus for of screaming infants on the way to visit the doctor. No matter when I've went there, I've had to scream at others in my party to carry on a conversation.
"Bottomless" fries. Here's a thought. Bring out enough fries from the start. My last trip I had 7 fries in my chrome fry tube. Seriously. 7. I wasn't sure if they didn't have any left, or if the chef was hinting that i could lose a few lbs. I wanted more fries, but you would have a better chance finding Kim Kardashian's virginity, before you found our waiter.
Attentive wait staff. You are here to work, not talk about your date tonight, flirt with co- workers or stand and look out the window. How about you check on your guests. Ask them if they want refills (fries and soda) and maybe grab a mop and bucket and keep the place clean. Another problem here is the condition of the place.
The saving grace there are the burgers. Very good, and if you can deal with the loud noise and ho-hum service, you'll go away full.