I have an upcoming flight on VN J class HKG-SGN-SYD and return. Due to flight cancellation on HKG-SGN and SGN-HKG, VN put me on a code share flight with CX being the operating carrier. With the two short haul segment now on a code share flight, I think my only choice is to credit to VN and nowhere else, I would like to seek advice where to credit my long haul segments based on my travel pattern and background:

- No status with DL or VN
- Around 60k miles in DL which I accumulated since 20 yrs ago. Redeemed only once or twice on short haul.
- New account with VN
- Based in HKG, CX (OW) is my main carrier with top status.
- Traveling with other two family members with similar background

VN Pros: Family Account can combine all miles for three of us; 150% accrual
VN Con: Expire after 3 yrs

DL Pros: Already got some miles here; no expiry
DL Cons: Miles seem depreciating fast