Thanks Robisan, I've managed to get in touch with my TA, he'll check with Seabourn tomorrow. This is the first cruise with Seabourn and I wasn't aware of this supplied water in large containers. Most of the time I cruise with Azamara and they supply small sealed plastic bottles. May be the way forward is to reduce plastic is using these large refillable bottles. Hopefully my request will be resolved.
Thanks once more.
Craig