A compilation of codes from the above referenced thread, it may not be all inclusive, I listed what I could find thru 20 some odd pages, I may have missed a lot

I don't know if these all work so don't ask me.. some are old and may not be valid, some may require ID of some sort.. Don't ask me which ones I use b/c I won't post or PM you with the information..

Edited to add: I'll try to update with new ones occasionally so just write them in below and I'll update as time permits

Try these at your own Risk

Thru Jan 05

A70 Alaska Airlines
A9M All State Motor Club - Thursday-Sunday
AET Aetna
ALL Allstate
AMX American Express
AOL American Online
ARP AARP
ATT AT&T
BOG Buy 1 get 1 free - Springhill Suites
C9N Canada Discounts
CIT Citicorp & Affiliates
COK Coca-Cola
CNL If you work for Marriott
CRP Corporate
CVG Convergys
CUE Eastern U.S. Cultural / Arts
DEL Dell Computer
DIS Disney Employees
D52 Northwest airlines specials in southwest US
D58 New York special rates through Sept 7
D60 Taste of Italy
EAT Meal Promo
EDS Electronic Data Systems
ENC Encore Discount
FAL “junk rates”
FBL Florida Power
FED Federal Express
FLT Fleet Bank
FPL Florida Power
FUS First USA
FRD Ford Motor Company
GAR Unknown
GMC General Motors
GOV Government Rate
H30 Free night stay in southeast
HON Honeymoon
I24 Renaissance Hotels
IBM IBM Corporation
LHS Lufthansa Miles and More Elite
LPR Local promotion rate
LRR Leisure Rate
LVU Love You Special Rates
M11 Marriott Rewards Member Offers
M12 Marriott Rewards Elite Offers
MEB Marriott E-Breaks - US/Canada
NCL Family package
NOR Northrup Grumann
N8R $50 Bonus Bucks for up to 2 nights
N9R Fall getaway
NIS Nissan Corporation
OP7 Come out and play - Weekend Rates
OTP Come out and play - Wknd Rates 15% - Amex
P52 Unknown
P74 Hawaii Escape
PEP Pepsi
PES Escape Packages
PKF Park and Fly
PKG Package Rates
PS2 Unknown
R8H Los Angeles Renaissance $76/night F-Su
SAL Saloman Smith & Barney
SHO Shop
SPA Spa Package
SPR Sprint
SW8 Southwest Airlines
STF Scientific Atlanta
STT Unknown
SUN Sun Microsystems
TEA ??? Teamsters ???
T72 Tulane University
TFB Two for Breakfast
TRS We Car(e) for you
TRV Travel Professionals (IATA/Travel Agent/Marriott)
TVL Unknown
TXI Texas Instruments
TX1 Texas Instruments
TZO Travel Zoo Special Offers
UAL United Airlines
U54 United airlines in London
UNI Uniglobe Travel
UPS United Parcel Service
V12 International Hotels (20% discount)
V88 London Area Marriott Hotels
VIP Marriott VIP Athletic Program
VPS Unknown
VSA Visa
WKD Weekend
W8S Western hotels special rates
W9S LA Airport
WCT Washington D.C Tourism Coalition
XXX IBM
Phone Reservations Only
WSAS $10 off and breakfast for 2 special rate
MYZZ 25 or 50 % off at select vacation Club Villas
MWAR 3rd night free in Thailand
MMEO 4th night free at select Marriott Offshore resorts in the Carribean
SOWK Arizona and California - 15% off
MWAQ JW Marriott Orlando Grand lakes & Orlando World Center
CFA Chick Fil A
CLX Clorox
DLA Delta
FAL Fall in love with ATL
APP Applied Materials
NVL Novellus
APL Apple
INC Incentive Awd
NOV Novell Pharmacy
SHL Shell
PRU Prudential
BPA BP Amoco
LGM Legg Mason
JPM JP Morgan
TR5 Trowe Price
DBK Deutsche Bank
BAR ?
XML ?
LLR someone stated for cops and firemen
MMP Marriiott Associate Pleasure rate?
MMR Friends and family
TRW TRW
MMM 3M

Edited 4/22/05
RTZ Ritz Carlton – need ID?
S4B Stay for breakfast
D50 Special Value Rate
MOG Marriott Owners Discount
EMP ???? unsure if this is a Marriott Employee rate
LOW Lowes