The last time I really went tanning for an event was prom about 2 years ago! It may be hard to decide how often to go because it is important not to burn and not to peel!!! Considering the amount of time you have, space out the number of times you go tanning. You might even want to get a package somewhere! I used to every Wed and Sat, especially in the beginning. I started for about ten minutes the first week, so I wouldn't burn. Then I kept going twice a week for 15 min. The week before Prom I went tanning 3 times, and the week of I only went two times again. Do not go tanning the day before Prom!!! You don't want to be burned or look like you have a fake tan! If you don't go the day before Prom, your tan will look more natural and you will still be GLOWING!! This worked for me.....by the time prom came around I was a natural-looking bronze color!!! P.S. my dress was pink as well...I love the color you picked! Have fun!!!