They are just finishing practice over the Academy and have been using 141.175 AM for the last hour. One pilot was heard saying "That there is a difficult show site." 413.275 (FM) DPL 431 Maintenance is also active today.
As for a good vantage point I would suggest the Bass Pro Shops parking lot - Gleneagle exit then east. Can't miss it. It will probably fill up early though. Thanks to Mick on the response on the frequencies. 235.250 was active during the practice as well.