As the weather looks very nice on Saturday (sunny and light easterly winds), we shall venture in to Langstone Harbour for a change and row up to the Ferryboat for a swim / drink / snack on beach (all 3 if you are organised, brave and multi dexterous).
I think it will require lots of effort to coordinate snacks from everyone (and I am all for an easy life), so might be best to bring something for yourself. However, if you do over cater, I am sure there will be plenty of takers for anything spare!!!!