What is the best time to buy the tickets for Transformers 3 imax 3d?

Alright, i know that the movie have not come out yet. But I just want to know when will be the best time to purchase the tickets before it sold out. i know for sure that people can purchase the tickets before the movie comes out. I really need to watch it when it comes out or maybe after 3 or 4 days when it comes out. Plz help thxWhat is the best time to buy the tickets for Transformers 3 imax 3d?Generally the booking starts 3 days before the date of release.So it could be on 27th june 2011.What is the best time to buy the tickets for Transformers 3 imax 3d?I'd get em asap. That way you ensure you get them. But if you don't see it opening day, I don't see the need to reserve tickets. They'll be some I can almost promise you...