Hi Seth,
Thanks for submitting your question to the Disney Parks Moms Panel! I can tell you from experience that yes, the
Seven Dwarfs Mine Train attraction does indeed participate in the
Rider Switch Service, despite it not being listed on the Walt Disney World website. If you've never used it before, please ensure that your entire party meets the Cast Member at the front of the queue for the pass.
I was only able to see part of the second portion of your question, so I'll do my best to guess what you were going to ask. A few things you may need to know: the seating in this attraction is done in pairs and only two riders can sit side by side in a row. Children under 7 years old must ride with someone that is at least 14 years old, so if one of your older children is 7 or older, they can ride in a row by themselves.
Hope this helps! Have a great time on the Seven Dwarfs Mine Train-it's one of my new favorites!!
Best Wishes,
Amy B.