Secure racing numbers (bibs) for your racers. You can purchase these from local vendors - but it's generally cheaper to just purchase the ones provided by event host - plus they will have the event logo on them. It is good idea to get an extra set or two for those who tend to lose stuff
extra copies of rosters forms, everyone's health sheets, and passport numbers
Passport and a photo copy placed in a separate bag
wrap your paddle blade with 15 x 10 1/2 envelopes lined with bubble wrap
secure a VTR on your cell and computer gear to protect yourself from physical and virtual theft
travel directions, hotel name,
load up your cell phone with travel apps (touring, language, money exchange)
copies of your airline ticket(s), passport identification page, credit cards, driver's license, and other documents you plan to carry with you. Store these records in a separate place from the originals to expedite the replacement process
ATM, Credit Card
Bring on board plenty of Gatorade (i guess you bring the powered form and then mix with water into a drink) to help keep you hydrated on the long flight and keep electrolytes up.
carry on stuff you can't afford to lose (racing uniform, paddle)...check the rest.