Night elf roleplay is your best bet here; most night elf guilds are based in Kalimdor. There’s the occasional public event, and thr scene itself is very much alive. For a list of guilds and upcoming events, you can check out the night elf RP thread.
EDIT: there’s also hubs, of course! Feralas used to be active (but not so much anymore, to my knowledge), Astranaar is fairly active and I think Wisplight Willow is attempting to bring Nighthaven to life.