You could call and ask to speak to the specific department you wanted, to ask them directly. Since they only process/train some of the employees and HR does everyone, they won't be so busy and may be able to tell you sooner. Just explain that you'll have to make the travel arrangements and I'm sure they'll be more willing to take the few minutes to look it up, they are really understanding about that sort of thing. They just don't want 1000+ people calling to find out!
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PO!NT OF VIEW - A Different Look at Roller Coasters
http://www.crosswinds.net/~justmayntz/thrills/