Well, personally I read the Intergalactic Summit a great deal before I ever started posting there seriously, mainly as a way to determine what's expected. If you're unsure feel free to do the same.

When I say "physical venues" I mean they are like spaces that you as your character have to actually walk into and exist in. Imagine say Playstation Home except written out, I guess is the simplest way to put it. Where as the posts that are more forum like is like a forum and you're not directly interacting with other characters but only speaking to them, the physical venues are more direct interaction as though your character is actually standing there and walking around. Usually posts like this you would find that the first post holds a fairly detailed description of what the location looks like by the Original Poster.

There are groups of people and corporations who Roleplay. The best example is PIE Inc, an all Ammarian Corporation who fight solely for the Ammar Empire in FW and all RP for it. Notable members of PIE that you would mostly end up interacting with are True Adamance (Actual Character's name is Kador Ouryon), Aero Yasavi and Maikyl Metsar. There are others but those three are off the top of my head. There are others who fight for specific factions too , whether in a corporation of just as a group with similar interests, as most of New Eden is. Just note that just because you're character is born of a specific faction does not mean you have to fight for it. The Caldari and Ammar are allies and the Gallente and Minmatar are allies. There's tension even between them. I personally do a lot of my fighting in Minmatar Factional Warfare. I have a friend who likes fighting for Caldari but does not agree with their alliance with the Ammar. There are also other minor factions that you can read up on in the Eve Wiki if you're interested.

I love Gallente ships; they're so freeform.