We are sending my parents (age 70/80) to BA then thought they could take a boat to Colonia (maybe stay at Plaza Mayor) and explore the area (sounds like you need a golf cart). Then they would go to Montevideo for 2 nights (Sheraton unless someone knows anything more charming). Now I read they may want to rent a car for the trip from Colonia to MVD and stop at a vinery or enjoy the ride. Any tips on things to see or do? Should they go to an estancia or save that for an escape from BA for a day? They will be there for 4 nights at the Park Hyatt. My siblings want this to be a really great trip so I will awake any opinions before locking in on the schedule. Thanks.