The “ambassador” of country music is headed to Sin City! This February you can catch Blake Shelton at Caesars Palace, as he is slated for six performances between the 5th and 15th next year. Tickets will go on sale for the public on the August 16th, but fans might be able to take advantage of a pre-sale which begins August 9th. That pre-sale will be exclusive for Citi/AAdvantage credit card members, as they are the official card for the Blake Shelton at Caesars Palace: Live in Las Vegas residency. As a card member, you would have access to purchase tickets…