Help me...?

im going on a BIG field trip 2 springfield w/ my school, it takes 3 hours 2 get there and were going on the bus. well, were leaving @ 6:30 a.m. and coming back @ 10 at night. well, i have long, straight, thivk, jet black hair. i need a hairdo that'll last all day without me fussing about it. xoxo- thanks!