Planning 1 day trip June 13, with husband and teenage son, and curious about others' experiences with Blue Mtn. Day Tours. We like that Ferndale Wildlife Park and river cruise back through Sydney Harbour are included for $95/adult. Other "perks:" trip to future Olympic site, all transport, and - woohoo! - free koala. Is this worthwhile over hop-on/off Explorer bus from Sydney? Is merely passing through Katoomba on day tour adequate? Thanks for your insights.