There are vendors all over the top 6 because that's where the biggest drinkers sit!
And, regarding what TC said, if you park at the Westin (Vine between 4th and 5th), you can buy your tickets at the Reds Dug Out shop which is on the first floor of the hotel (across from the 5th & Vine Bar). I think they go on sale 2.5 hours before game time. If you get there before that, it's probably just as easy to buy them at the stadium.
"Enjoy this Reds fans, you are watching a legend grow up before your very eyes" ... DoogMinAmo on Adam Dunn