Hey Angel, you can totally do this! I just went on a trip to Disney World which I was horrified to do from the plane to the rides. Turned out that I had fun, discovered that when I am distracted I am not as panicky, and came home with a bolster of confidence. I had 2 bad moments that I worked through second by second. One was a ride was stuck in the dark and the second was the plane which sat on the runway (for a loong time) packed FULL of people with no air conditioning, I felt like I couldn't breathe. In these situations I just kept breathing, stayed calm, and the kept on picturing myself making it through the situation.
Have a plan for when you do feel panic: from chewing gum, listening to music, and bringing a book. Envision yourself being okay, keep thinking about how it will feel when it's over and you can say, "I did it!"
Good luck! :)