Luggage question Caribbean TA

[bee-ess]

We have been on Caribbean TA twice cruising out to Caribbean in October and flying home from Barbados. As the luggage coming home has been bonded from the ship to the UK we have never bothered to much about sticking to the airline weight limits. In October this year we are doing a Caribbean TA again but 3 weeks this time and flying back from St Lucia instead of Barbados. Does anyone know if the luggage is bonded back from St Lucia as it is from Barbados as we will have more luggage than normal and it would be nice not to have to worry about the weight limits.