Airports - look at flights to both GSO (Greensboro), about 30 minutes from campus to west, and RDU (Raleigh - Durham), about 45 minutes from campus to east. Use the airport with the cheapest flights. GSO would be preferred if pricing is identical, but for us, RDU is usually cheaper. Look at all the airlines, as prices vary from one time to the next. We check all options each time traveling. Also, RDU is a straight shot along I-40 and fairly easy. So is GSO, but the recent construction near airport really has made that airport a little bit more confusing - I agree!
We always stay at Acorn Inn if available. It is the only place to stay that's walking distance from campus. The other hotels mentioned are nice, but convenience is key for us. If you can't get into Acorn Inn and have trouble finding a hotel at Burlington (this will be true if you go 11/7, homecoming weekend), we love the O'Henry Hotel in Greensboro, about 22 miles from campus.
Another reason to stay at Acorn Inn if possible during auditions - they run a lottery for rooms for parent's weekend and homecoming. You cannot be part of the lottery unless you've stayed there at least once. Parent's weekend usually comes up in Sept.
My son usually helps with auditions - sometimes with singing, but usually with dance, so look for the small guy!
Also, if you plan to audition 10/31 or 11/7 and see Sweeney Todd, tickets go on sale 3 weeks before the opening of 10/30. You may need to check with the performing arts office to see if you should schedule the show on the Friday night of auditions, since auditions can run late. You may want to go Thurs., 10/30 or stay over to see one of the Sat. night shows.