Ate lunch here on a snowy Monday. Not very busy, but that was not surprising considering the conditions outside. We were promptly seated, and our waitress was at our table quickly.
Food - you go to a Red Robin because the food is pretty consistent. Decent burgers and great fries & onion rings. This meal didn't disappoint.
The X-factor with chain restaurants is the service. I've had some poor experiences because of this, but our service here was excellent. Food came out quickly to our table, refills were provided without asking, and the check came before I had to ask.
Comparatively, Red Robin isn't a 4-star restaurant, but for delivering on my expectations, they've earned it on this visit.