Mexican Restaurant Serves Great Food to Gilbert Families. Rio Rico Mexican Grill is conveniently located at 747 N. Val Vista Drive in Gilbert, AZ. We are a family-owned and operated Mexican restaurant and take great pride in offering our Gilbert customers a casual atmosphere where they can enjoy all of their favorite authentic Mexican food. We are not a fast food Mexican restaurant nor are we part of a national Mexican restaurant chain. We are so much more! We have a large sele.