incorrect drop-off date
 

Hi,
I am renting a car for 9 days from loerrach germany, and I am intending to drop it off at 2:30 p.m. frankfurt airport, I made a small mistake in the booking and chose 2:30 a.m., will I be able to correct this at the pick-up station with no extra cost, another question, at the pick-up station the top car category is ldar bmw 525, is there a possibility to order a specific vehicle like bmw 7 or x5 to be brought from a nearby station for example,

regards,
Oma