Cleaning and oiling it yourself will be more satisfying, less expensive and will make you more familiar with your machine. If it's running and sewing smoothly then this is the perfect time for you to do it. There's nothing to repair, just make sure you put things back the way you found them if you take anything apart.
Triflow is most recommended for sewing machine oil here, if not that then any sewing machine oil will work. Don't use 3 in 1 oil or WD-40 or anything but sewing machine oil or triflow. Other oils will gum up the works eventually and some can damage the finish. For parts that need grease a good lightweight synthetic is recommended.
Enjoy your new machine and Merry Christmas!
Rodney