We went here on a Friday in October. It was not ve...

We went here on a Friday in October. It was not very crowded which was nice. There is security (like TSA but less) to get into the arch itself so give some time for that. The bathrooms were clean and family friendly. The trip up and down the arch was easy. We had preordered tickets online and we didn't have any waits at all. My 3 little kids loved the Arch and the museum exhibits below (see pic). Weather was cold and windy so didn't spend much time outside this trip. Will come back for sure even just for the museum part and the garden/riverfront.