With Flex Passes you get Uptown and Downtown Hop-on Hop-off bus tours as only one of your attraction choices and the ticket is valid for 72 hours.
Using The Sightseeing Pass on the Bus:
Sightseeing Pass holders do not need to visit a desk and stand in line to collect
double decker bus tickets. Simply scan your Pass on the bus, and start enjoying your
tour instantly. Less waiting, more enjoying. ONLY with The Sightseeing Pass.