great places to eat in Riverside, near Convention Ctr
Second Las Campanas, especially for al fresco dining. Mario's across the street is good, but can be terribly noisy. Duane's in the Mission Inn makes for more civilized conversation, albeit more pricey.
For more casual eats, try Grams at 5th and Main for bbq, creole and cajun. They're friendly and fun there, but it can be a madhouse at times. It all depends on your mood . . .