I know the SITA bus line runs, but the schedule is very inconvenient on Sundays (3hr "layover" in Amalfi is part to blame). I'm aware of the following ferry services, but can't figure out if they run on Sundays: Metro del Mare (whose http://www.metrodelmare.com/ website has been down for a couple of months for "maintenance") Coop. Sant'Andrea: http://www.coopsantandrea.com/it/servizidilinea/servizi_b.asp?id=4