It depends on how much money the bride and groom have and if they want to spend extra for wedding favor's.
No, they are there as your guests and friends. They have probably already given you wedding gifts, and it would be very rude to charge them for anything.
Once a gift is given at the wedding then these gifts of owned by the couple and if they divorce it will be up to them to decide who keeps what.
They expected to be given gifts...it was part of Ancient Greek culture to give gifts to your guests...I think.
The golden wedding anniversary gifts are usually given on the 50th anniversary. Average gifts are necklaces, rings, and furniture. Your women will appreciate this and use it often.
Now that the wedding is called off and if you received 'gag gifts' it is not necessary to return those gifts, but if you were given gifts such as a watch or something else then you should give the gifts back to the people who gave them to you (most of your friends would probably want you to keep the gifts anyway.)
Traditionally money is given in a red envelope to a couple in a Chinese wedding. Other gifts are acceptable however, but do not give a fan as a gift. This is taboo.
A wedding bomboniere is given to the wedding guests at the reception and usually consists of a small gift or sweet. Bomboniere was introduced by the upper class society of 16th century France. Elaborate gifts were provided to wedding guests as a gesture of thanks from the bride and groom and consisted of fancy boxes (made of crystal, porcelain or gold) containing sweet delicacies. At the time, sugar was regarded as a valuable item, being extremely expensive and also known for it's medicinal purposes.
Shower and wedding gifts are given to the couple to start out their life anew. There is no correlation whether it is bad luck or not to use any of the shower gifts before the wedding day, but just the great feeling of having all new gifts to start the beginning of the rest of your lives.
A wedding favour is a small token or souvenir given to guests from the bride and groom. It often has the couple's initilals or wedding date on it. It serves as a reminder of the day.
All situations are different. Sometimes, the bride and groom can pay for their own wedding themselves.
* Yes, if a married couple are renewing their vows then a gift should be given unless the invitation has stated that no gifts be given.
No, the gifts are given as a boost to the new couple. You are not obligated by any means to provide a gift to a married couple that is renewing their vows.