Thanks for the help - actually ended up getting the email address from CX HKG - for future reference it is:

[email protected]

They are very efficient and say I can pick up ticket at the apt.

Unfortunately I will probably only fly in, get the ticket and head back out - not even time for for a drink at the Galle Face this visit but guess I will be back with in 12 months - have actually been a few times before - nice city but better if you can get out.