I'm on Balmung and there is a -lot- of RPers in Ul'dah.

I will say though, there seems to be an influx? if you will of people who have alts or transferred or started out who seem to either only want ERP or are 'special' 4ch XIVG people.

The lodestone periodically updates for when characters can be created / transferred?

I've never checked other times but Balmung is usually open 4am and 8am PDT.

If you're interested in the community or asking people from Gilgamesh (another unofficial RP server), there is also http://ffxiv-roleplayers.com/