In Las Palmas on Gran Canaria (5th largest city of Spain despite being on Canary Islands) we hired a cab for the day to take us to all the places Mrs. BD had mapped out. We agreed to a price of $80 (I call Euros "dollars" for the fun of it) for as long as we wanted him - all day. After driving us around for about 6 hours or so, at 3 pm, we managed to indicate to him that we wanted to stroll around the old city and find some "authentico" late lunch (guy spoke Spanish only - not a single word of English). We agreed he would pick us up at 5, 2 hours later, in front of the old basilica. That was five fingers.
Then he drove off without asking for a penny. We explored the old city, checked out Columbus' house there, grabbed some delicious grilled fish and vegetables and a beer and waited for him to return to the large ancient square where they were blasting ridiculous Spanish versions of American Oldies - like They're Coming to Take You Away, HaHa and Camptown Races. Doo-dah, doo-dah. Hilarious.
At 5 on the dot, he pulled up to drive us back to the seaport. I gave him an excessive $20 tip to reward his trusting nature.