So the wait in line ended up being about TWO HOURS. My companion and I would take turns waiting while one of us would find a spot to rest and power nap. Luckily for us, we got to the top just in the nick of time to catch the amazing Chicago sunset!!! That was the ultimate saving grace to this unbearable experience. That, together with all the booze we imbibed, made it worth it. Had we arrived just even five minutes later, we would've missed it and just opted for tired, angry drunkedness. Instead, we had tired, awe-inspired drunkedness. Whew!