Will I be going? help please?

okay so, i am going to alton towers with my school and the deadline to hand in the slip to go is 19th May 2011 and i handed it in a day after. On the letter it says: "the deadline for subbmission of the reply slips is thursday 19th of may 2011. After this date any surplus coaches will be cancelled. Any spare places will be filled on a first come first served basis." Does this mean i'm still going?