If the students on your team don't have you trained before the big day then you're in for a ride!
My experience as a mentor is that you do a ton of OJT followed by an off-season of re-thinking your past mistakes, hopefully learning from them and avoiding them the next year. But seriously...
Get on the NEMO list and you can get some excellent assistance from people who are non-engineers (like me for example). Once you get to the venue the event takes care of itself but the time up to the final build day are hectic, the hours long but the rewards high!
Best of luck!