No worries, there is masses of vegan chocolate and soda. Probably to much. No excuses to quit chocolate intake
Just check out the mass of vegan online stores, or your local health food store. There will be a few dark chocolates in your local store i'm sure as well.
In the UK we have a lot. There is also a vegan company called plamil that make all kinds of chocolate stuff in the UK. They have also attempted a milky choca called Mortello.
I would recomment checking out veganessesntials.com for the US (or anyware) they stock lots of sweet things. Also a bar made from Terra nosta which is milky.
Most Soda is vegan, it's just most vegans avoid certain companies rather than the products. Coca-cola and pepsi for example. In the UK we have this little book called the vegan shopper which lists everything.
Even for people living in the US, might be worth checking out the vegansociety in the UK.
Things like flap jacks, and raisins are sometimes coated with dark chocolate. Also if your superstore has a allergy section - food free from things like milk and wheat. Then check this section out. In the UK stores there is a vegan milk chocolate in each one!
If anyone needs a more specific list, let me know.