A successful trip to Disney begins long before you land in Orlando.

You need hotel reservations, ground transportation, park reservations and tickets, and those coveted advance dining reservations, also known as ADR.

But the first (and most important) decision you’ll make is when to go.

When making a decision, I look to Disney World crowd calendars that use past park attendance data to predict how busy the parks may be on a given day.

By finding less crowded times, you’ll be able to ride more attractions and (maybe) have an easier time getting reservations. Additionally, ticket prices are usually lower outside of peak season.

WDW Magazine, Magic Guides, and Undercover Tourist are just a few of the sites I’ve seen that offer these calendar tools.