This event is one of the most fun things to do in Utah and I have been looking forward to it for nearly a year.
We will meet up at 10 am and either carpool or caravan down to the temple. Keep in mind that you will be absolutely covered in colored corn starch, I strongly suggest bringing a blanket or sheet to sit on during the trip back. Avoid wearing anything that you don't want to have ruined! Light clothes will show the colors best.
The cost to get in is $3 but you will likely want to buy colors to throw do be prepared to spend around $25. Last year they were only accepting cash but had an ATM on site.