Couldnt see out the lower windows, arrives every 20-30 mins so we wasted time waiting, bus stops were inconvenient to attractions and difficult to locate, sound systemwas terrible, announcers talked too fast and it only ran 9 to 4 in Nov. We bought the 2 day pass and rode it 4 times, it was easier to walk or take the metro and the street staff were condescending. Buy the trolley tickets! No wait, convenient, enclosed, and a much better staff.