mr dan .as for the manners ,there is only one rule to be obeserve that is to make youself at your country . great affection is the point and gift is second.so there is an old saying in China "千里送鹅毛,礼轻情谊重" means "the gift itself may be light as a goose feather, but sent from afar, it conveys deep feeling"
haha ..
there was maybe many worry grammer in my answer. but hope you can Understand.
best wishes ..