“Never relinquish clothing to a hotel valet without telling him you want it back”

New York-based author Fran Lebowitz offered “Travel Hints” in her book Social Studies (1981):
 
“Never relinquish clothing to a hotel valet without first specifically telling him that you want it back.”
 
The advice has been frequently cited on Twitter.
 
   
Wikipedia: Fran Lebowitz
Frances Ann “Fran” Lebowitz (born October 27, 1950) is an American author and public speaker. Lebowitz is known for her sardonic social commentary on American life as filtered through her New York City sensibilities. Some reviewers have called her a modern-day Dorothy Parker.
     
Google Books
Social Studies
By Fran Lebowitz
New York, NY: Bantam Books
1981
Pg. 97 (Fran Lebowitz’s Travel Hints):
Never relinquish clothing to a hotel valet without first specifically telling him that you want it back.
     
RodMcKuen.org
17 November 2000
(...)
TRAVEL HINTS
by Fran Lebowitz
(...)
15. Never relinquish clothing to a hotel valet without first specifically telling him that you want it back.
 
Twitter
Wyndham New Yorker
‏@WyndhamNYH
#hotelhumor “Never relinquish clothing to a hotel valet without first specifically telling him that you want it back. ”—Fran Lebowitz
10:17 AM - 5 Apr 2010
 
Google Books
Neverisms:
A Quotation Lover’s Guide to Things You Should Never Do, Never Say, or Never Forget
By Dr. Mardy Grothe
New York, NY: HarperCollins
2011
Pg. ?:
Never relinquish clothing to a hotel valet without first specifically telling him that you want it back.
FRAN LEBOWITZ
 
Twitter
Jewish Comedians
‏@JewishComedians
Fran Lebowitz: Never relinquish clothing to a hotel valet without first specifically telling him that you want it back. | #Quotes
4:23 PM - 4 Feb 2016