Hi there, not sure what hotel you are staying at but have you tried e-mailing the particular Hotel and asking them - I am going myself to Costa Brava in 10 days I will post the answer when I get back, but you may want an answer before then.

thank you miss pink for replying we normally stay in the maripins l hope you have a safe journey and a good holiday l have been trying to see if l can find any web sites with some info on this as this is a new thing to us, at home we have becks blue but not sure if they sell this in costa brava thank you for taking the time to find out.
many thanks

Just about all bars in Spain sell non alchol beers, so I'm sure you'll have no problem in the hotels....Jackie

Thanks for your help jackie much apprecciated

San Miguel "Sin" is available in most places