How do I convince my parents to let me go ?

My friends Natalie, Rosemary, Brad & I are planning a trip to Disneyland. Brad is just a friend of mine but I'll admit I do have a crush on him. In fact all us girls planning to go all like him. He is a good boy. He has good grades he's very nice & he's really close to his family. His mom already said he can go for sure. I just don't know what my mom would say I was just gonna introduce my friend to my mom so she'll understand he's a good boy. I've never hungout with a boy & it's not a date cause our other friends are going. And I would never do anything bad because my family & I have good morals. So how should I approach her? And how can I convince her to drop us off? Btw all of us are mature responsible kids & I'm about to turn 15. We all have cell phones they can reach us at