I know it's late to be asking this question but I only have about 15 hours before I take delivery of my S75 tomorrow without the time to read through 1,000's of posts. Anything important that I should know at delivery? I've inquired about prepaid maintenance but have 60 days to make up my mind. While I've done a fairly extensive test drive, the controls are still intimidating. I'm almost 70 years old but still have a pretty good learning curve Thanks for any tips!