We were in Barcelona for only one full day and covered all three routes that were offered. The staff was courteous and friendly and provided good assistance. We never had to wait long for a bus—generally only five minutes—and seats were always available. The only exception was at Segrada Familia, where there was about a 15 minute wait, as there was a queue for seats on the top and this is the most popular stop. You can see a tremendous amount in a day on this bus. We enjoyed it very much and highly recommend it.