this is my first post, sorry if i mess anything up,
found this today,
"National Car Rental has a promotion. Go to their site, enter your location, pick up 2 day weekend days, enter coupon 10009780, select "1" for the windows next to coupon ID, click "Continue". Select "Standard SUV", click "Continue". You will see a free rental, just pay tax. For 3-day weekend, use code 10009782,"
"This is a little YMMV, since you may have a few issues unless you have an Emerald Club Membership,"