I used a stretchy fabric (moby, bali baby) when my children were younger and I was learning how to use the wrap. It was more forgiving! After the first couple months I moved onto woven wraps, both because my baby was heavy and because I was comfortable using the wrap. I had a Bali Baby Breeze, http://www.gypsymama.com, and a Storchenwiege that I used interchangeably. Wraps are fantastic for carrying a heavy babe!
Have fun at the festival and happy babywearing!