FWIW, for my 7 and 3 year olds, I’ve 1) positioned myself on the back rail so I can pick them up and not worry about blocking people behind me (also helps to have something to lean on when carrying so much weight!) and 2) positioned myself towards the front rail and just let them stand. They still can’t see the lower castle stuff from there, but the higher stuff is fine. The open walkway on the path in front of the garden gives just enough of a space to let little ones see out/up. I’m not going to say this is the absolute perfect setup for little ones, but for me it’s better than being out in the hub smushed together with potentially much more difficult viewing situations.