When someone has a long taxi, requested well before you, do not race them to the runway.
When you’re told to give way, do so.
Jumping to Tower early when not at the hold short line in an effort to redefine “first come, first served” is poor etiquette. Rage quitting because you weren’t allowed to cut in line, worse.
(All requests for names, callsigns, time, location, etc. will be met with silence. I’m not calling out an individual in public.)