I would lay down my life for my kids, but they'd be pulling my Mine Train FP's from my cold dead hands before I'd trade them for those terrible carpets they love. Trust me, a toddler getting an extra turn on Tomorrowland Speedway with me is not taking anything away from a childless adult's disney experience.
Side note- Disney is totally turning us against each other right now because of a problem they created. Standby lines are crazy long even for the least popular attractions bc of what they've done with the FP system. When you only had one paper fastpass at a time, you just went to Space M with your party, showed them a little kid, and got rider swap passes, and then adult 1 got in line however your little heart desired, FP or not. the littles could go standby on another attraction with little to no wait, but often those don't exist anymore. Now with tiers and times and paid FP we're all posting hundreds of replies and getting up in arms (myself included, I'm legit annoyed at the policy and it will have 0 effect on my life) because someone's child might get an extra ride on It's Small World. So crazy.
Bottom line is, riding standby on anything doesn't make a lot of sense to me anymore and I definitely would not tour that way, especially with little kids. No one on these boards is riding SB on the major rides.