Instead of an Octopus card, is there a 1 day tourist senior's ticket

I am only passing through HK on a cruise ship, docking at Kai Tak Cruise Terminal and there is free shuttle buses to various shopping malls Telford Plaza in Kowloon Bay, Hollywood Plaza in Diamond Hill. I plan to go to Diamond Hill and find modes of transport to Lantau Island but I do not know how to get there plus not knowing how to get a 65+ non resident ticket on the different modes of transportation. Can any one help me?
Thanks.