Essentially, if you are a student, strive to advance liberty, and live within a few hours of DC, there is no excuse for not being there.
And this year's conference looks to be the best one yet. A special taping of the Stossel Show, speakers like economists Tyler Cowen and Bryan Caplan, former NM Governor Gary Johnson, breakout sessions appealing to various crowds (public policy, Austrian economics, careers in liberty, activism training, more), six free meals, tons of free materials and resources - all terrific.
You can register and find more information here.
Now, if you'd like to travel with a group down to DC, there is also an option for that. Take a look at this bus trip from New York City is being coordinated.