Jedi training availability with half day tickets

We have purchased half day tickets, what are the chances my kiddos will get to sign up and participate in Jedi training? Touring plans says the day is a 6. Thanks!

We got to Jedi Training for sign up at 9am and were able to snag a 11:00am spot. However, when people were arriving at our 11am training, they still had spots open but were later in the day, after 5. Crowd level also a 6. I think you will be able to get a space but it might be later in the evening.