The difference for the boys is that now they are engaged in a task that is an obligation, a privilege and a responsibility clearly delineated in the eyes of the young men for the service of God. This is the boys first exposure to a ministry presented in a hands-on fashion. This is an opportunity for the young men to learn by doing. If your parish has subdeacons or responsible older altar servers, then a measure of discipline will always be present for the altar servers. Discipline is always in force, but one priest and a large group of altar servers may be a bit of a challenge.
Some young boys can be very impetuous when they first start to serve.
Generally they know what they want to do and when they want to do it. This may be the first place they learn about serious order and discipline within the Church apart from their parents. Sometimes tasks need to be performed by someone more experienced or have already been assigned. This presents a problem for those boys who insist on doing certain tasks. These young men while often very capable need to learn patience.