It is good Netiquette to use it where appropriate. Don't use it everywhere.
It is up to the user to decide where it is appropriate to use a tablet based on the people around them in many situations. Some places have rules.
Tablets are ultra-portable and highly visible when turned on. Users must make their own decisions at their own discretion in many circumstances where it is appropriate to use. A lot of establishments do not have rules about electronic devices or tablets. Many tablets are sold with wireless services plans while others connect to the internet through hotspots.
Consider your surrounding when using device because appropriate use depends on the atmosphere.
Published on May 16, 2015 | 0:25 Seconds | Science and Technology
An introduction to Tablet Netiquette. Keywords, graphics, and symbols.
Published on February 16, 2012 | 1:01 Minutes | Science and Technology
The Rules of Netiquette for Tablets.