In Venezuela, the only attendants during the wedding ceremony are the bride and groom's parents. The mother of the bride can walk down the aisle herself or with the mother of the groom.
Since the father of the bride walks the bride down the aisle, who else would do it?
Typically it is an usher or some family member who walks the bride's mother down the aisle. as part of the wedding ceremony.
The isle.
People in the church stand when the bride walks down the aisle as a sign of respect to the young bride.
The bride walks down the aisle to meet the groom at the alter in a church wedding.
Nothing "happens" it is her choice as to who walks her down, it could be her brother, sister, mother, her own son or any other relative she chooses.
Being that we are in the 21st Century he can do either or he can take them both down the isle. Tradition would have been the REAL mother of the bride, not the step-mother. You discuss it with the father. He should have an input into this matter.
* No, the mother of the groom would take the arm of her husband or if she is divorced or widowed then it is acceptable to take the other arm of the father of the bride (wife on the right and you on the left). After the wedding vows and the bride and groom go back down the aisle then the best man goes with the Maid of Honor and the ushers with the bridesmaids.
In traditional Christian weddings, the mother of the bride will sit in the first or second seat in the front row on the bride's side of the aisle (the left). The bride's father usually sits in the first seat after escorting the bride down the aisle.
In traditional "christian" weddings the Groom begins the wedding at the front of the room/church. However the groom can elect to be walked in by a mother/grandmother etc. Although some cultural proceedings will involve other rituals.
The family generally will choose the person they would like to walk the mother of the bride down the isle. It can be an usher or some other member of the family- there is no real set rules for this part of the wedding ceremony.
The bride walks down (or up) the central passage way not the Aisles (typically these flank the pews and are called the North and South Aisles)