I'm going to spend my vacation in Sardinia!

I'm going to Sardinia (Cagliari) in two weeks. I saw this place in a picture and it was really amazing. Hope I can find confirmation of it soon. I've noticed that Italian men are patriotic and they prefer to speak their native language. I´m really worried about it because I'd like to combine my relaxation with English practice. I would be really greatful if somebody could share their expirience of visiting Sardinia. Hope to have the best holiday there.