I genuinely can't remember if this is a shot from LD. The episode where Boimler gets a girlfriend, maybe?
For their internal politics, yes the PD applies. For general interaction, no, the PD no longer applies. You can also land on a pre-warp world if they're already buying Romulan Ale from the Ferengi. It's not like you can make it any worse once the cat's out of the bag. Consider that Kirk was sent to negotiate with the Organians back when they were thought to be a pre-industrial species; that was fine since they had already been contacted by some other people, including the Klingons.
You can combine it with nearly anything and it will work. I love chocolate, but I'm unconvinced that it would work as the ice cream flavor in a float, for example. Vanilla? So long as the other flavor is sweet, it will work.
Majel Barret shows up in season 3 as Lady Morella.
Transporters are way less useful on their own than you think. Take the following scenario...
Centuries ago, your people developed transporters. You improved the tech until you could beam to the next star system. Now you have a network of them spanning hundreds of light years. You can cross your entire interstellar civilization in minutes. Your people discovered warp a couple decades ago, but it's merely a curiosity next to your transporters and wasn't developed much.
One day, you encounter a new alien race called the Romulans. They use primitive warp drive ships rather than transporters, so you don't think much of them. Things are a bit tense for a few years, and then they demand your unconditional submission to the Romulan Star Empire. This is absurd, so you obviously refuse.
Three days later, refugees start beaming in from one of the outer colonies. Reports indicate that none of your soldiers ever saw a Romulan. Rather than beaming down soldiers to fight, the Romulans levelled the colony with energy weapons from high orbit. Your forces tried to board the enemy ships, but they had some kind of energy field around them preventing transport. A lucky shot from a planet-side cannon firing beyond its rated range managed to find the mark, but was blocked by that same energy field just meters away from the hull.
It's been three weeks and now the Romulan fleet is in orbit of the homeworld. Bolts of green light start falling from the sky, obliterating the capital city, but leaving the capital building intact. Your transporters are still unable to pierce their shields. Your scientists think they'll crack it eventually, but they need weeks and you only have minutes.
With all the major population centers destroyed, the Romulan commander repeats their ultimatum: unconditional surrender or complete destruction. You accept their demands. Three Romulans beam into your office, the first time since the war began that your people have come face to face. Two are holding rifles. The other is holding a document and a pen.
I didn't even get to listen to all of it because the app always wants to autoplay Hegemony.
Or Farscape's. We got The Peacekeeper Wars to wrap it up eventually, though.
Sometimes you just decide to deal with that. I'm lactose intolerant, but I'll be dead in the ground before I stop eating cheese or ice cream. I just don't eat it frequently enough to be a continuous problem.
And just like Worf's backbone, it's dramatic when it breaks, but it'll be good as new by next episode.
It ranked pretty highly as a write-in candidate at a con once.
There's a comment in TNG's first season about French being a dead language. I'm guessing that was meant to hand wave Picard's accent.
There are actually differences in the Prime and Kelvin timelines that happened before Nero's incursion. For instance, Kirk's date of birth is off by several months. They tried to justify that afterwards by saying something about the event sending shockwaves through time to change things before it even happened or something like that. The real reason probably lies in that interview where JJ Abrams admitted he never liked Star Trek, but you could argue that the removal of various down-stream time travel events, like the events of "The City on the Edge of Forever" likely not happening in the modified timeline, could actually cause retroactive changes to the timeline.
But anyway, the Kelvin timeline already diverges before the Kelvin-Narada thing, because reasons.