Costa Brava in March?? weather at least can be unpredictable, but more a chance of wet weather. Bars will be open (Spanish bars) but the majority will be closed up (British bars) till the season starts in late May. Estancos for tobbaco products are normally open but with a slightly different horario (opening times) till season start. Only one or two in the area will be open on a Sunday A few will only open Saturday afternoon. The taxi drivers are a good source of which one will be open.