What would you do?

This Sunday, Jordan Pruitt is having a amusment park concert at my local amusment park, CA's Great America. Tickets are $15, its a good deal and a possible meet and greet. The next day is my first day of school. I asked my mom, I can get dropped off, but I can't go by myself. I'm 17. She says I have to take someone with me to be on the safe side. i don't know what to do because I don't know if i know anyone that likes jordan pruitt. Its a really good price. I recently heard that Miley will have a Breakout concert tour early next year. I just hope Miley's concert for my city would be on a weekend. Miley's would cost more, but she's my most favorite. What should I do?