Questions about Opening Day-Weekend and Flights

I'm considering visiting Silver Dollar City next month for the first time. The time that I have off from work happens to coincide with their opening day. Does anyone know if they have all the coasters open during that time? I'd hate to get all the way out there and not be able to get on Outlaw Run, Time Traveler, Powder Keg, and Wildfire.

Also, if someone has taken a plane to visit the park, what is the most convenient airport to fly into? It seems kinda in the middle of nowhere, and reasonable direct flights look hard to come by. What is your experience with this?

Thanks in advance :)