6. Buy tickets
If you haven’t already, purchase you park tickets somewhere around 75 days out from your trip. Consider how many park days you will need. Be aware, the more days you purchase, the less you’ll pay per day. A one-day ticket is over $100! A 10-day ticket is about $45/day. You can also add park-hopping to your tickets, if you want to go to multiple parks in a day. Having your tickets purchased ahead of time will allow you to complete step #6 below.