An 8km walk from Double Bay to Rose Bay, then a bus ride after coffee, sounds mighty good.
Meet at Double Bay ferry wharf, Bay Street at 8am. On street parking is free on Sunday. Last time we did this walk we caught the ferry on the return journey. The new timetable has cut this ferry out so we are bussing it back to Double Bay, bring either your money or bus ticket with you!
This is such an interesting walk and it is meant to be fine on Sunday :-).
Here's the link: http://www.mapmyrun.com/routes/view/262247039