So I guess you are supposed to step onto the seats -- inasmuch as they have that rough sandpaper texture to prevent you from slipping -- but this always bothered me. I mean, it seems kinda rude to take your shoe and then step on someone's seat. But, I figure that's what you're supposed to do. You can also step down first, onto the floor, and then take your seat. I do usually step onto the seat first, but it's always made me wonder what I'm then sitting on: not only the dirt from my shoe, but all those other shoes before me. On the other hand, the walkways in Disneyland are so clean that I suppose there really isn't that much dirt or dust to transfer. And hopefully the detritus of the "outside world" has become liberated from one's feet once you trod through the pristine byways of the Park.