想知道這句英文點講

如果想在restaurant叫ｗａｉｔｅｒ加水, 可以:excuses me, could u refill water for me, please?
如果同朋友想找人影相, 就是別人拿我們的相機，我和朋友一齊影，可以: excuses me, sir/madam. would you mind to take a photo for us?如果是我想同這個外國人影相，但今次是我朋友拿著相機，英文可以:excuses me, sir/madam. Would you mind to take a photo with me?
去食自助餐想叫waiter　取濕紙巾:excuses me, could u take a piece of wet-tissue for me, please?
I hope i can help you ! best regards!

1.Waiter, would you give me some water please ?
2.Can you please take photo for us?/ Do you mind I take a photo with you?
3.Waiter, can you give me some wet tissue please?

excuse me, I would like another cup of water.
excuse me, I would like some more water.

Could you take a picture for us please?

excuse me, I would like to have some wet napkins.
excuse me, could you give me some wet napkins?