My Pledge is: Respect local customs and talk to the locals
The best holidays often take place outside your hotel room. Read up on local cultures to help respect local customs and talk to the locals in the local lingo. By reading guidebooks, beforehand and following advice from a local guide will help with dress code and etiquette at religious and cultural sites and events. If you are not allowed to visit certain places, respect their wishes and behave appropriately.
By speaking a few words is also a great way to gain an insight to cultures and the locals will really appreciate it.