RP on GW would be awkward with the text limit, Id think. I only really ever RPed on forums, though. With insanely long posts. Very time consuming, that.
I actually only started "net talk" because of the text limit. I was finding it very hard to have a complete sentance sometimes, if i didn't drop a few letters.
No. You can PvE solo. To RP, you need to find a patient sap who is willing to endure your tedious tirades. If you're still confused about what RP is, check these two out: