It means that you feel a sense of renewed commitment to your spouse and/or your family. Something probably has happened quite recently that has caused you to have a fresh appreciation of your loyalties and commitments.
This is the traditional time at which it is done. That being said, there is no rule against renewing your vows anytime you feel like it.
* 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.
"Smilin'" by Bryn Christopher.
There would be no point in applying for a marriage license if you are already married. And most places wouldn't issue a new one because one of the requirements is that you have to state that you are not currently married.
Peter Schmitt has written: 'Renewing the Vows' 'Hans Gottfried von Stockhausen'
Marriage.
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.
Up to you really.
marriage
Vows of Love and Marriage
It depends on the tradition, but Celtic marriage apparently was for "one year only" in many places. Therefore, it was necessary to renew the vows or the couple would be considered to be "divorced". Quite often, this was done as part of the larger Lugnasad celebrations in August, when new couples would get married and others would just join in the celebrations, thus renewing the marriage. In contemporary Druidry this renewal can take place publicly (with some sort of party or celebration, as mentioned) or in private, doing something simple and meaningful for the people involved.
Honesty. Open communication. Faithfulness. All these things are covered in the marriage vows.