This sounds like it'll be pretty cool to watch, hopefully the weather doesn't suck. Not sure if the smoke will help this or hinder viewing. The main event happens this Saturday night:
The pinnacle event takes place Aug. 21 at 9:30 p.m. with the release of 500, 80 cm balloons that will float down the Bow from Edworthy to Prince's Island, where they will float into the lagoon.
http://www.calgary.ca/portal/server....r+of+Light.htm