Do you have to be over 18 to buy if you have your medical card

Call them. Legal there

Sadly the law is "21" , this is why it's vital to have a care giver assigned over the 21 age who can help

Yes, unfortunately you have to have a valid identification and be 18 years or older to go into any dispenser!!! I hope this is helpful!! Any other questions you have few free to hit me up on Facebook messenger!!