I posted this on Tolkien forum originally, but I'll post it here as well.
- Growth: In about 1 year they learn to walk, talk and dance, because their wills come soon to the mastery of their bodies. They reach full adult stature in 50 years, which means that they stay as children for much longer time than Men.
- Pregnancy: About 1 year long.
- Marriage: Elves have one spouse and their bond is for life. Marriage is not only an union of the two spouses only, it's an union of their houses as well, and the betrothal or wedding ceremony reflects it. The spouses may not live together at all times, but it doesn't mean that they still don't feel a lot of affection towards each other.
- Betrothal: Elves choose their spouses quite early in their life, especially in the time of peace. Their parents would have to approve the marriage. The wedding can be called off, but it's quite rare, because they seldom mistake of their choice of spouses (though under Shadow this can change). Houses are being invited together, and the future spouses would give each other silver rings.
- Wedding: Happens at least one year later. The houses are called together once again, and the Elves would then have a great feast. After the feast the bride and groom stand up, and mother of the bride and father of the groom join the hands of the pair, and bless them. Varda is named as the witness by the mother and Manwë by the father. The name of Eru is also spoken, though it's seldom done in another time.
The couple then receives back the silver rings from each other and treasure them, and they're being replaced by slender golden rings, worn on right index finger. In troubled times, they can also marry each other without ceremony or witness.
- Divorce (better known as "disunion"): Only possible if the other Elf spouse dies. The spouse that lives can take a new husband or wife, but only in the condition that the spouse in the Halls of Mandos agrees to it, and the fact that he or she can never leave the Halls and have a new body.
- Male roles are usually: Warrior, smith, woodworker, tinker
- Female roles are usually: Healer, musician, tailor, gardener
- Both genders are equal, and they can turn tables if needed: For example, females can make valiant warriors, and males can make effective healers. Though dealings with death can weaken their ability to heal (which makes the minstrel class actually quite accurate with the War Speech, and also the rune-keeper).
I hope this helps.