Treating the Meishi with disregard implies a lack of respect for the person from whom you received it. Normally, both parties exchange Meishi. When you present your card, present it with the Japanese translation side, if you have bilingual cards. If your Meishis are only in English, present the card so that the other person can read it. Gifts may range in price and simplicity according to one's economic status.
Gift giving is an established Japanese tradition and accordingly is a very sensitive issue.
For example, to refuse a gift under normal circumstances could be construed by the Japanese as offensive. In some instances, acceptance of a gift from a Japanese by a service member could range from being illegal to being completely harmless such as in the case of the acceptance of a non-duty related gift of nominal cost from a personal Japanese friend. Any gift that you receive and are in doubt as to its legality should be reported to your Commander for advice concerning the gifts disposition. Also, remember if we accept a gift from our Japanese hosts, we should find a suitable way of reciprocating. The gifts should be simply wrapped.