During the pandemic I could not get to my 1969 280 SL for two years. Once I did, it fired right back up, and that was with a tank full of 2 year-old Ethanol-laced fuel. So, check the oil, coolant and brake fluid levels as suggested, take a deep breadth and start her up, chances are it will be just fine.
p.s. I hate to admit it, but my tires are about 16 years old and I am still driving (albeit not on the highway) with them. I know I know, next year.