HI Arnold: I would like to recommend the Steam Railroading Institute at Owasso Michigan. You can buy one seat on a caboose or the entire caboose for private parties. This train travels on the Main Lines of Michigan. Check it out at the link below.
https://www.michigansteamtrain.com/
Check out this video on my YT:
Pere Marquette • Berkshire 1225 • 2 8 4 • Steam Railroading Institute • Michigan's Main Line
https://www.youtube.com/watch?v=nZt83PevSyM
Hope this helps: Gary 🚂