A video visit to Mackay's Annual Free BBQ. Sponsored by the town of Mackay, guests include current residents, returning residents, students and visitors from the surrounding communities. Held every year on the third Saturday of September, the BBQ is held at Mackay's Tourist Park. It is an opportunity to catch up with old friends, make some new ones and enjoy a delicious BBQ sandwich. out under the cotton woods. Local musicians and singers entertain guest out under the Cottonwoods. Say goodbye to summer with the warm and friendly people of Mackay in this beautiful setting in the Big Lost River Valley.