The sizes aren't a problem - they are so well stocked (even for larger and smaller sizes) that they'll have it. You'll exchange your uniform for an identical size (always check though, you don't want them to make a mistake!). Once in a very blue cheese moon they might not have it, and then they'll try to substitute, as far as I know.
Foods: blue shorts/pants, blue with green plaid shirts.
Games: green shorts, blue with green polo shirt.
Merchandise: tan shorts, white with red/blue/yellow/green plaid shirts.
Ripcord/Challenge Park: tan shorts, red and black starburst polos.
Anyone else? Those are what I know for certain haven't changed in the last couple of years -- I think! :)
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PO!NT OF VIEW - A Different Look at Roller Coasters
http://www.crosswinds.net/~justmayntz/thrills/