Make sure that your party size is within the limit. There is a strict limit of four people, no matter their age or size. If your group is larger than four, not everyone will be able to ride up front. Also, when the monorail arrives, there may already be passengers in the front. If there are fewer than four, some members of your party can ride if you are willing to split up. Otherwise, you can wait for another train that may have an empty front.
Ask a cast member if you can ride in the front of the monorail. There may be other people who have asked ahead of you. If so, let the cast member know that you are willing to wait for multiple trains in order to be able to ride in the front.
Wait in the spot where you are directed by the cast member. Wait until the train arrives, and the cast member will check to see if space is available. If so, you will be directed into the front cab of the monorail.
Boost your chances of riding in the front quickly by riding the monorail at non-peak times. For example, the monorails generally are full to capacity at park opening and closing times, but not many people go to the parks in the middle of the day. Off-peak times offer the best opportunity for a prompt ride in the monorail's front.