RE: 30,000 Mile Check up?
If you want to keep your factory warranty, you need to get the service done. If you don't and you have a problem later, Hyundai will void your warranty because you failed to do the required maintenance.
At 30K you need an oil change (with filter) and automatic trans fluid flusk, a coolant flush, new air filter, new cabin air filter, tires rotated, and numerous inspections.
Maintainance is part of owing a car.