Car rental Code for a week (not traveling for a week) Can i return early any fee

[almass]

I will be traveling to la from 1/19/14 - 1/23/14

i saw a coupon code on budget

code 1:
W852875

this code only works for a week rental i iwll try to reserve a week and return early see what happens.
Code 2:
MUGZ042

40USD
Off Weekly Rental
Budget

would i be able to reserve the car for a week and return it early or will there be a fee involved for returning the car early?

i will be paying for the week.

also has anyone here or the corporate code (W852875) does it work for under 25, or is it for only 25+