This was suggested by many in the discussion about Las Vegas Shootings: How Does One Secure Against Such A Risk At An Event?
Now, the Hilton, 4 Disney Orlando Hotels and Wynn are restricting the use of 'Do Not Disturb' signs to short periods:
Hilton is now changing its policy to stipulate team members should inform active security or duty managers if a Do Not Disturb sign or light has been in place at a guestroom door for longer than 24 consecutive hours.
Wynn Resorts is also not taking any chances. The company now has employees investigate any Do Not Disturb signs in place for more than 12 consecutive hours.
This is a fairly straightforward display of the tradeoff between security and convenience. Do you care? Will this help?