Are your parents like mine? Like once they have a decision they stick to it and say no to everything you throw at them? If it's genuinely cheap for you instead of say "but its cheap" ask "why do you think..." where they are forced to listen. I will look up if i can pay for myself, then after UKO I will ask. If i can pay, that throws "it's too expensive" out the window.
I loled when my mum today decided i should have a haircut, and to test i kept saying "but i prefer it like this its my hair", "but.." etc... Then i said "but *nonsensical mumble*" and she immediately said "no!" . Perfect example. She began giggling in an embarrassed way when I told her I didn't even actually say anything coherent.
Haha thats awesome about the hair. I'm gonna try that next time

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My parents are pretty much just like that. Well, actually mostly it's my mom. If she says X to something, then the only way I can change that to Y is be getting my dad to convince her... Which sometimes works. I haven't asked them about this yet. I'm waiting to see some things from some friends first, to see if it's actually going to be possible for me to go with them (i.e., without my whole family coming) or I'm just going to wait until the "opportune moment" when they say something like, "You need to be more independant! When I was your age, my parents didn't know where I was over half the time of the summer! I paid for my own clothes, went out to eat with friends by myself" etc.
I'm sure I can pay for it, especially if I start saving now and gather up a few hundred dollars+a plane ticket.
Plus, I can always just (like I said earlier) buy some bread and canned soup before hand and just eat that if they insist on food there being expensive. I don't need any special foods for this, just as long as it's not crazy unhealthy and I get sick.
Oh, and I was looking up crime rates for Vegas, and it's actually not that bad... It's not nearly as bad as Greenville SC, Baltimore MD, or Even washington DC (used to live in those places and went downtown fairly often). Then again, if you know where to go, you're probably safe in most cities.