Thanks!!
There were young ones on our excursion, but not tons. This actually benefits everyone. When there are just a few strollers to be stowed at each stop, takes less time than if everyone on the excursion has brought a little one. I think it was a great tour for kids, but it is a long day. I warned my kids ahead of time and that seemed to work well....they liked it more than they thought they would. They really enjoyed the day.
For our tour, there were about 3 bus loads that used the same train. You just stayed with your own bus group and guide, so it wasn't too big. We had about 3 families using strollers on our bus for their toddlers. There were about 2 four year olds as well.
I don't think you would feel out of place for having young ones

.