Originally Posted by
jimallen2011
If I book coach class for my 7 years old and business class for spouse and myself, would my kid be allowed to stay with her mother during the flight? My 7 years old is short and small.
No
Originally Posted by
jimallen2011
Will we able to get free upgrade for my kid in the spot if there are non-booked business seat?
No
Originally Posted by
jimallen2011
I could also book coach class for myself and business class for spouse and my kid. But I am afraid the odd for me to stay with them is slim.
Correct, if you are ticketed in coach, you'll be sitting in coach.
Originally Posted by
jimallen2011
What else? Any hint about making the above arrangement to work better? Thanks in advance!
Based on the information you have provided/your parameters: the only option is for one adult + 1 child to be together in business class and one adult to fly in coach.