Here's the codes if you're interested. Got them from this forum:
http://www.flyertalk.com/forum/national/851283-new-discount-contract-ids-coupons-thread.html
You don't need a coupon with the electronic codes, but you may need to show your entertainment card.
ENTERTAINMENT BOOK 2010 ELECTRONIC CODES
(use contract ID 5027957 for the following
ND2912ZDP * Ent. Book 2010 (exp. 12/2010) - $40 off 10-day rental, any size car, US, Latin America, or Caribbean.
ND2921ZDL * Ent. Book 2010 (exp. 06/2011) - $50 off 21-day rental, any size car, US, Latin America, or Caribbean.
NF5572ZDF * Ent. Book 2010 (exp. 06/2011) - 1 free weekend day, compact-full size, 3-day min, 5-day max, US ONLY.
NU3947ZDB * Ent. Book 2010 (exp. 06/2011) - 2 car class upgrade, reserve compact-midsize, US or Canada.
ND29Z3ZDI * Ent. Book 2010 (exp. 06/2011) - $30 off 5-day rental, Sat. night keep, any size car, US, Latin America, or Caribbean.
ND2885ZDY * Ent. Book 2010 (exp. 06/2011) - $20 off 4-day rental, Sat. night keep, any size car, US, Latin America, or Caribbean.
ND4743JDO * Ent. Book 2010 (exp. 06/2011) - $10 off 2-day rental, Sat. night keep, any size car, US, Latin America, or Caribbean.
NF2853JDU * Ent. Book 2010 (exp. 06/2011) - 1 free day, Sat. night keep, compact-full size, 5-day min, US, Latin America, or Caribbean.
ND2924ZDU * Ent. Book 2010 (exp. 06/2011) - $25 off 3-day min. rental, convertible, mini-van, or SUV, US ONLY.
ND2002FJR * Ent. Book 2010 (exp. 06/2011) - $20 off weekly rental, midsize or larger, 5-day min. rental, United States, Canada, Latin America, Caribbean or Asia Pacific, Contract ID 5008716.
ENTERTAINMENT BOOK 2010 PAPER CODES
(use contract ID 5027958 for the following
NF62Z3FJX * Ent.Book 2010 (exp. 06/30/2011) - 1 free day off a 3-day weekend rental, Sat. Night keep, compact or larger
NU4453FJL * Ent.Book 2010 (exp. 06/30/2011) - Double Upgrade, rent compact-midsize
ND1317FJY * Ent.Book 2010 (exp. 06/30/2011) - $20 off weekend rental
NF6197FD * Ent.Book 2010 (exp. 06/30/2011) - 1 free day off 5-day rental, Sat. Night keep, compact or larger
ND1283FJA * Ent.Book 2010 (exp. 06/30/2011) - $40 off 10 day rental