Many organizations and leagues that have larger numbers of registered players tend to delineate within the two-year window allowed for each age group. In these situations, teams composed entirely or primarily of players in their second year of eligibility are designated 'major' teams, while those with players in their 1st year of eligibility are designated "minor" teams. For example, ten-year-olds would be "squirt majors" while nine-year-olds would be "squirt minors". This is especially true in "AAA". Some leagues separate players six years old and younger into their own group, often referred to using names like "Mini-Mites", "Mosquitoes", or "Microns.
Ice is scarce and expensive, do your player a favor and give them plenty of time to get dressed so they can be on the ice, on time and not miss any instruction. Coaches expect all players to be ready to go on the ice before the designated time. As they get older, once the doors to the ice shut, for many coaches they will stay shut. Bring a water bottle.