My grandmother is arriving in Sydney off a world cruise, only here for 2 days (1 night) and she'd love to see the blue mountains, I've hired a car for the weekend and wondering how best I can show her the highlights of Sydney and a little of the BMs without it taking over the whole weekend. She's active but not likely to walk for a long period so really wanted to be able to have a scenic drive up to Katoomba, get out for some fresh air and magnificent views before heading back for an evening in the city. Picking her up at 10am from the Cruise terminal and wanted to be back for around 6pm (same day) - am I mad? Can this be done? If so any recommendations for a route and stop offs?