We had our vehicle in the shop to have it looked at for general maintenance (belts, plugs, etc) before we leave Friday to drive down to Disney. Well, they found a major problem and it's going to take days to work on it and it won't be ready by the time we have our package reservations. 
Anyway, we're considering renting a vehicle from Budget for the drive down and back. I need some help / advice as we've only rented cars after flying down to disney. Budget says there are unlimited miles, but what is "unlimited" mean? Are we able to drive it out of state?
I'm so freaking out right now and ready to cry, we're supposed to live Friday a.m.

Anyway, we're considering renting a vehicle from Budget for the drive down and back. I need some help / advice as we've only rented cars after flying down to disney. Budget says there are unlimited miles, but what is "unlimited" mean? Are we able to drive it out of state?
I'm so freaking out right now and ready to cry, we're supposed to live Friday a.m.