TPAC = Trans Pacific

J = Business Class and Y = Economy Class

December next year? Do you mean December 2013 or 2012?

December is one of the better months to visit for someone not used to the hot and humid tropical type weather.

Cathay has a 4th class called Premium Economy which may be of interest to you:

http://www.cathaypacific.com/cpa/en_...0007d21c39____

Macau is an interest place to do a day trip even if you do not gamble.

Check out the Parlour Room at the Metropark Causeway Bay Hotel. It's a low 4-star/high 3-star hotel. The room size may be suitable for you with 2 very young children.

http://metroparkhotelcausewaybay.com/