13 days away - I'm jealous!
Most of the vouchers are mailed to you with your vacation packet... and the back of each one will state the requirement for advance reservations. But honestly, the only vouchers that actually need be presented in person are Richard Petty (no reservation necessary) and
possibly the preferred fireworks (reservations necessary).
Your checkin package will include your paperwork, La Nouba voucher (on cc stock which you will turn in at the LN ticket window for paper tickets), and your KTTW card (room key, meals, tickets ...also you will use this to pay for mugs at CS and all activities; recreation, cruise, spa, etc). I believe the tours are already financed via phone reservation since we weren't asked for payment from them.
Depending on what time in the morning you checkin (early/before 7), a manager may not be available to unlock the safe for the La Nouba vouchers. Therefore, you may have to return to pick those up. Otherwise, the rest of your package is presented immediately for use.
Hope this makes sense - enjoy your trip!
Forgot the photopass - keep the photopass card that comes with the mailed packet. This card contains the code letters PLAT which you'll need to redeem online for your free photopass cd. To be on the safe side we only used this one card for all photos throughout our trip.