Has anyone been to the arch this summer on a weekday pm? The website says to allow 30-45 min. to go through security. I really don't have that kind of extra time and am wondering if we arrive 15 min. early if that's good enough. I was thinking of booking an 8:30 pm slot for Wed. 7/8 since sunset is at 8:29. Will we be able to see the sun set from the arch or just the colors associated with a sunset?Also, has anyone been to the new viewing platform on the other side of the river? We'll be driving from Springfield, leaving by 5:30 and hope to reach the viewing platform at the Malcolm Memorial Park by 7:30. Will we have enough time to get some pics there and get to the arch for an 8:30 slot? If you're a little late will they let you in on the next available time or do you forfeit your ride? To save $2.00 on parking, how far of a walk is it to the arch entrance if we park at the levee vs. the $6.00 arch parking garage? If we had more time, I'd park at free metered parking by the courthouse but don't think we will.