Our group of 8 went to Rico's during s conference lunch break.
They saw we were from the conference and seated us quickly, took and prepared our orders quickly and had no problem separating our checks and having them ready for us, again, quickly. The service was great!
As for the food .. we had some 'meh' reactions. Feedback from the group: the medium burger was a little too well done, the beet salad had a sparse amount of beets and the addition of salmon to two salads was also on the sparse side of things and other dishes were 'okay'
Overall this is a good option if you need somewhere close to the Hilton and only have one hour but I wouldn't go out of my way for the food.