Tons of curlies swear by Curl Keeper
for the summer humidity. You still have plenty of time to experiment with that before your wedding. One day of cones wont kill you though. You might even be able to get the cone out without a SLS shampoo. Look at Lazy Loops siggie for more info on that.
High Priestess JessMess, follower of the Goddess of the Coiling Way and Confiscator of Concoctions in the Order of the Curly Crusaders