Greek Easter

Hello! I know this isn’t specifically related to the Greek language but I would still appreciate the help please!

The man I have been seeing (long distance England/Athens) has invited me to spend Greek Easter with him and his family back in his home town. I’ve never met his family, nor are we actually in a proper relationship but I would like to make a good impression! I’m Catholic and have absolutely no idea on Greek Easter customs or traditions. I would obviously like to bring gifts for letting me stay in their home, but what sort of things should I bring for them related to Easter gift giving. Also, what should I expect for Easter week? Should I bring certain clothes etc?

Thank you so much for any help or guidance!