If you don't already halve tickets for your trip, then the day before at 9 am their time, they release a limited amount of tickets. By 9:10 they're almost all gone during the busy season so put a reminder for 8:55 and be ready.
Yes, check the website tho. They only release tickets so many days in advance. If you don't get them on the day of release, you should be able to get them the day before you are planning to go. They release some 24hrs in advance as well
Thanks! Your answer is awaiting moderation.