BA holidays are not available as group bookings.
On group bookings only the Silver card holder gets the extra checked baggage allowance. Also I don't believe you can do advanced seat selection. Having an infant on the booking usually gives you free seat selection, but not entirely sure for group bookings.
BA says these are the benefits...:
- You'll have a dedicated team to look after you.
- You can book your flights with a 20% deposit.
- You can pay your balance 8 weeks before.*
- You can tell us who is travelling up to 2 weeks before departure.*