While working with Starfall, every member is entitled to up to as much vacation time as they possibly like. This policy is applied to underaged aswell as adult members on the project. This decision is due to the project being an unofficial place to work, as all members do not get paid for labour.
Gacha Starfall only requires you to inform the moderators on the Discord server when you plan to go on vacation. This can be done by opening a ticket on the server where you can inform a moderator about your vacation.
The requirement to go on vacation is next to none. You just need to make sure the moderators are aware.