fsa1,
First-year international students actually arrive on campus about a week before other first-year students for a special orientation program sponsored by ISA (International Students Association).
You will be picked up from the airport (JFK, Newark Liberty, Lehigh Valley) upon your arrival to the States.
I recommend visiting the ISA website at
http://ww2.lafayette.edu/~isa/index.htm for some very helpful information intended specifically for international students. Start by clicking on "New Students" to the right and downloading the "ISA Freshman Handbook". You might also wish to view a video of last year's ISA freshman orientation by heading to the "Media Lounge".
I'm sure you'll receive more information about this special orientation program from ISA within the next few months. If you wish to speak with an international student to learn more about arrival procedures, you might wish to send a private message to the CC user rytis. Rytis is a first-year student from Lithuania, and I'm sure he'd be more than willing to answer your questions.
With all that said, you should receive your housing and roommate assignment around the same time as other first-year students (no later than mid-July).
You have every reason to be excited about college...it really is an amazing experience!
All the best,
- Justin