Normal
On our first cruise (honeymoon) my husband and I somehow wound up at the Captain's table. It was grand--he was the perfect picture of a sea captain with a short salt and pepper beard and loads of charm. He ordered wine for the entire table which we thought was amazingly nice. Not being experienced cruisers (or experienced at anything much at the time) we just assumed this was a one time matter. Until the next night when the captain graciously handed the wine list off to his left and those passengers ordered wine for the table. We watched as each couple bought wine and so learned that to be gracious, we should buy wine, too. Since then, we have offered on the first night to share with the table (always declined) and then just share our bottle. It is not necessary to share, but we always reciprocate if others share with us. And we remember (if someone does not reciprocate) how unsure we once were.