What to wear to a school trip? need it by 8 tomorrow.?

its for 5 hours. 100% chance of rain, and my crush is coming. i will wear a purple tank top, a fleece, and a raincoat, but any ideas for staying cute and staying dry? please get it to me by 8 tomorrow. i also wil get kinda dirty some nothing too nice. just tell me the basics an what colors.