oh--if you haven't been to HKG before get the Insight guide HKG--awesome book and kids will like pics/pull-out map etc.
I loved the HK side--city is user friendly--but HUGE! I stayed Bishop Lei Hotel, Robinson Rd--got Bus pass, had fab corner room way above harbor/skyscrapers (set up hillside) Dim Sum for Bfast, and commuter harbor cruise, the escalators are outstanding experience.
Garuda Airlines flies HKG/DPS direct, yes? do you have deal w/them? We're doing HKG next yr w/merger NW routes for DPS--better than KE. WHat a pain.
PS--Sanur Beach is also a nice area of Bali--may want to ck it out.