book via flybmi.com/doublemiles
use PC code 123631 between 20 August and 30 September 200, you will get double BMI miles, even just for one day rental.
For US rental, use AAA CDP 116, which will you discount and not consider as Corp rate.
A great 3400 miles for 1 day rental:)
Note: booking via other website is not eligible for double miles and only BMI own CDP and AAA CDP will not consider as Corp rate.
Credit to Flytalk.com