To be honest, I'm not really sure. I don't know how RP guilds function or if they raid, PvP, etc.
Like any other guild, the variety that RP guilds do simply depends on the guild. For example, Twilight Empire currently has two raid groups and I think we're working on building an RBG team. We don't do a lot of World-PvP because our guild storyline is that we're trying to build peace with the Horde. With that said, we work with our allied guild (The Sentinels, The Indelibles, and Reprisal) to do PvP initiatives in Krasarang. Our guild chat is IC but we have an OOC channel that is moderated at a PG-13 level (even if it makes some members grumpy with me!).
Similarly, I'm not sure if <The Nights Veil> raids, but I know that Ryoka has an interest in PvP so they're a guild you hang out with, RP with, and PvP with. I also don't know if they moderate their channels, but it's something worth looking into.
Both <Twilight Empire> and <The Nights Veil> have more of an RP-focus than you might be comfortable with just starting out, which is understandable. I know several other amazing guilds, but I don't know that they're as family-friendly as you might like (i.e. their channels aren't moderated).
You know, you might look into <The Sentinels>. Virina is leading it now and I think that they're pretty family-friendly (they have some younger members), they have a raid group, and they are RP friendly. They're also helpful when PvP happens too (and being a part of the Council of the Resolute - our 4 guild alliance - gives you access to a larger player base). All around, they're great people!
Let's see if we can get one of them to comment in this thread.